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    Maui Economy, 6 Months After Wildfire, Is Still Reeling

    Twisted and charred aluminum mixed with shards of glass still lines the floor of the industrial warehouse where Victoria Martocci once operated her scuba diving business. After a wildfire tore through West Maui, all that remained of her 36-foot boat, the Extended Horizons II, were a pair of engines.That was six months ago, but Ms. Martocci and her husband, Erik Stein, who are weighing whether to rebuild the business, which he started in 1983, said the same questions filled their thoughts. “What will this island look like?” Ms. Martocci asked. “Will things ever be close to being the same?”In early August, what began as a brush fire burst into the town of Lahaina, a popular tourist destination, all but leveling it, destroying large swaths of West Maui and killing at least 100 people in the nation’s deadliest wildfire in more than a century.The local economy remains in crisis.Rebuilding the town, according to some estimates, will cost more than $5 billion and take several years. And tense divisions still remain over whether Lahaina, whose economy long relied almost entirely on tourism, should consider a new way forward.Debates about the ethics of traveling to decimated tourist destinations played out on social media after an earthquake in Morocco and wildfires in Greece last year. But the situation is particularly dire for Maui.State and federal officials scrambled last summer to find shelter for thousands of residents who had lost their homes, relocating people to local hotels and short-term rentals where many still live, often sharing a wall with vacationing families whose realities feel far from their own. Other displaced residents live in tents on the beach, and some restaurant owners pivoted to working out of food trucks.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More

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    Canada Offers Lesson in the Economic Toll of Climate Change

    Wildfires are hurting many industries and could strain households across Canada, one of many countries reckoning with the impact of extreme weather.Canada’s wildfires have burned 20 million acres, blanketed Canadian and U.S. cities with smoke and raised health concerns on both sides of the border, with no end in sight. The toll on the Canadian economy is only beginning to sink in.The fires have upended oil and gas operations, reduced available timber harvests, dampened the tourism industry and imposed uncounted costs on the national health system.Those losses are emblematic of the pressure being felt more widely as countries around the world experience disaster after disaster caused by extreme weather, and they will only increase as the climate warms.What long seemed a faraway concern has snapped into sharp relief in recent years, as billowing smoke has suffused vast areas of North America, floods have washed away neighborhoods, and heat waves have strained power grids. That incurs billions of dollars in costs, and also has longer-reverberating consequences, such as insurers withdrawing from markets prone to hurricanes and fires.In some early studies of the economic impact of rising temperatures, Canada appeared to be better positioned than countries closer to the Equator; warming could allow for longer farming seasons and make more places attractive to live in as winters grow less harsh. But it is becoming clear that increasing volatility — ice storms followed by fires followed by intense rains and now hurricanes on the Atlantic Coast, uncommon so far north — wipes out any potential gains.“It’s come on faster than we thought, even informed people,” said Dave Sawyer, principal economist at the Canadian Climate Institute. “You couldn’t model this out if you tried. We’ve always been concerned about this escalation of damages, but seeing it happen is so stark.”Nonetheless, Mr. Sawyer and his colleagues did try to model it out. In a report last year, they calculated that climate-related costs would mount to 25 billion Canadian dollars in 2025, cutting economic growth in half. By midcentury, they forecast a loss of 500,000 jobs, mostly from excessive heat that lowers labor productivity and causes premature death. Then there are the increased costs to households, and higher taxes required to support government spending to repair the damage — especially in the north, where thawing permafrost is cracking roads and buildings.The recent fires have forced some lumber mills to idle. It’s not clear how widespread the damage will be to forest stocks.Jen Osborne for The New York TimesIt is too early to know the cost for the current fires, and several months of fire season remain. But the consulting firm Oxford Economics has forecast that it could knock between 0.3 and 0.6 percentage points off Canada’s economic growth in the third quarter — a big hit, especially since hiring in the country has already slowed and households have more debt and less savings than their neighbors to the south.“We already think we’re teetering into a downturn, and this would just make things worse,” said Tony Stillo, director of economics for Canada at Oxford. “If we were to see these fires really disrupt transportation corridors, disrupting power supply to large population centers, then you’re talking about even worse consequences.”Estimates of the overall economic drag are built on damage to particular industries, which vary with each disaster.The recent fires have left some lumber mills idle, for example, as workers have been evacuated. It’s not clear how widespread the damage will be to forest stocks, but provincial governments tend to reduce the amount of timber they allow to be harvested after large blazes, according to Derek Nighbor, chief executive of the Forest Products Association of Canada. Infestations of pine beetles, which have flared up as milder winter temperatures fail to kill off the pests, have curtailed logging in British Columbia.Although lumber prices have been depressed in recent months as higher interest rates have weighed on home construction, Canada is confronting a housing shortage as it works to bring in millions of new immigrants. Reduced availability of wood will make its housing problem more difficult to solve. “It’s safe to say there’s going to be a supply crunch in Canada as we work through this,” Mr. Nighbor said.The tourism industry is also being hit, as the fires erupted just as operators were going into the crucial summer season — sometimes far from the fires. Business plunged in the peninsula town of Tofino, a popular destination for whale watching off Vancouver Island, when its only highway access was cut off by a fire two hours away. The road has since reopened, but only one lane at a time, and drivers need to wait up to an hour to get through.Sabrina Donovan is the general manager of the Pacific Sands Beach Resort and the chair of Tofino’s local tourism promotion organization. She said that her hotel’s occupancy sank to about 20 percent from 85 percent in the course of June, and that few bookings were coming through for the rest of the year. Employers commonly house their staff during the summer, but after weeks without customers, many workers left for jobs elsewhere, making it difficult to maintain full service in the coming months.“This most recent fire has been pretty devastating for the majority of the community,” Ms. Donovan said, noting that the coast had never in her career had to deal with wildfires. “This is something we now have to be thinking about in the future.”The wildfires could depress spending when households are already strained.Jen Osborne for The New York TimesRegardless of the severity of any particular episode, the costs mount as disasters get closer to critical infrastructure and population centers. That is why the two most expensive years in recent history were 2013, when major flooding hit Calgary, and 2016, when the Fort McMurray fire wiped out 2,400 homes and businesses and hamstrung oil and gas production, the area’s main economic driver.This year, most of the burning has been in rural areas. While some oil drilling has been disrupted, the damage overall to the oil industry has been minor. The greater long-term threat to the industry is falling demand for fossil fuels, which could displace 312,000 to 450,000 workers in the next three decades, according to an analysis by TD Bank.But there is still a long, hot summer ahead. And the insurance industry is on alert, having watched the increasing damage in recent years with alarm. Before 2009, insured losses in Canada averaged around 450 million Canadian dollars a year, and now they routinely exceed $2 billion. Large reinsurers pulled back from the Canadian market after several crippling payouts, increasing prices for homeowners and businesses. That is not even counting the life insurance costs likely to be incurred by excessive heat and smoke-related respiratory ailments.Craig Stewart, vice president of federal affairs for the Insurance Bureau of Canada, said climate issues had become a primary concern for the organization over the past decade.The mounting cost of catastrophic events in CanadaPayouts including adjustment expenses by property and casualty insurers for disasters that total more than $30 million, in 2021 Canadian dollars.

    Source: Insurance Bureau of CanadaBy The New York Times“Back in 2015, we sent our C.E.O. across the country to talk about the need to prepare for a different climate future,” Mr. Stewart said. “At the time, we had the Calgary floods two years before in the rear view mirror. We thought, ‘Oh, we’ll get another event in two to three years.’ We never could’ve imagined that we’re now seeing two or three catastrophic events in the country per year.”That’s why the industry pushed hard for the Canadian government to come up with a comprehensive adaptation strategy, which was released in late June. It recommends measures like investing in urban forests to reduce the health effects of heat waves and developing better flood maps that help people avoid building in vulnerable areas. Fire and forestry experts have called for the forest service, decimated by years of austerity, to be restored, and prescribed burns to be scaled up — all of which costs a lot of money.Mike Savage, the mayor of Halifax, doesn’t have to be convinced that the spending is necessary. His city was the largest to sustain fire losses this spring, with 151 homes burned. That calamity came on the heels of Hurricane Fiona last year, which submerged much of the coastline. Mr. Savage worries about the fate of the isthmus that connects Nova Scotia to New Brunswick, and the power systems that now peak in the hot summer instead of the frigid winter.“I certainly believe that when you invest in mitigation there’s a dramatic positive impact from those investments,” Mr. Savage said. “It’s going to be a challenging time. To think we got through this fire and say, ‘OK, that’s good, we’re done,’ that would be a little bit naïve.” More

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    A $1 Trillion Borrowing Binge Looms After Debt Limit Standoff

    The government has avoided default, but the effects of the debt-ceiling brinkmanship may still ripple across the economy.The United States narrowly avoided a default when President Biden signed legislation on Saturday that allowed the Treasury Department, which was perilously close to running out of cash, permission to borrow more money to pay the nation’s bills.Now, the Treasury is starting to build up its reserves and the coming borrowing binge could present complications that rattle the economy.The government is expected to borrow around $1 trillion by the end of September, according to estimates by multiple banks. That steady state of borrowing is set to pull cash from banks and other lenders into Treasury securities, draining money from the financial system and amplifying the pressure on already stressed regional lenders.To lure investors to lend such huge amounts to the government, the Treasury faces rising interest costs. Given how many other financial assets are tied to the rate on Treasuries, higher borrowing costs for the government also raise costs for banks, companies and other borrowers, and could create a similar effect to roughly one or two quarter-point rate increases from the Federal Reserve, analysts have warned.“The root cause is still very much the whole debt ceiling standoff,” said Gennadiy Goldberg, an interest rate strategist at TD Securities.Some policymakers have indicated that they may opt to take a break from raising rates when the central bank meets next week, in order to assess how policy has so far impacted the economy. The Treasury’s cash rebuild could undermine that decision, because it would push borrowing costs higher regardless.That could in turn exacerbate worries among investors and depositors that flared up in the spring over how higher interest rates had eroded the value of assets held at small and medium sized banks.The deluge of Treasury debt also amplifies the effects of another Fed priority: the shrinking of its balance sheet. The Fed has curtailed the number of new Treasuries and other debt that it buys, slowly letting old debt roll-off and already leaving private investors with more debt to digest.“The potential hit to the economy once Treasury goes to market selling that much debt could be extraordinary,” said Christopher Campbell, who served as assistant Treasury secretary for financial institutions from 2017 to 2018. “It’s difficult to imagine Treasury going out and selling what could be $1 trillion of bonds and not have that have an impact on borrowing costs.”The cash balance at the Treasury Department’s general account fell below $40 billion last week as lawmakers raced to reach an agreement to increase the nation’s borrowing cap. Mr. Biden on Saturday signed legislation that suspended the $31.4 trillion debt limit until January 2025.For months, Treasury Secretary Janet L. Yellen had been using accounting maneuvers known as extraordinary measures to delay a default. Those included suspending new investments in retirement funds for postal workers and civil servants.Restoring those investments is essentially a simple accounting fix, but refilling the government’s cash coffers is more complicated. The Treasury Department said on Wednesday that it hoped to borrow enough to rebuild its cash account to $425 billion by the end of June. It will need to borrow much more than that to account for planned spending, analysts said.“The supply floodgates are now open,” said Mark Cabana, an interest rate strategist at Bank of America.A Treasury Department spokesman said that when making decisions on issuing debt, the department carefully considered investor demand and market capacity. In April, Treasury officials started surveying key market players about how much they thought the market could absorb after the debt-limit standoff was resolved. The Federal Reserve Bank of New York this month asked large banks for their estimates of what they expected to happen to bank reserves and borrowing from certain Fed facilities in the next months.The spokesman added that the department had managed similar situations before. Notably, after a bout of debt-limit wrangling in 2019, the Treasury Department rebuilt its cash pile over the summer, contributing to factors that drained reserves from the banking system and upended the market’s plumbing, prompting the Fed to intervene to stave off a worse crisis.One of the things the Fed did was establish a program for repurchase agreements, a form of financing with Treasury debt posted as collateral. That backstop could provide a safety net to banks short on cash from lending to the government, though its use was widely seen in the industry as a last resort.A similar but opposite program, which doles out Treasury collateral in exchange for cash, now holds over $2 trillion, mostly from money market funds that have struggled to find attractive, safe investments. This is viewed by some analysts as money on the sidelines that could flow into the Treasury’s account as it offers more attractive interest rates on its debt, reducing the impact of the borrowing spree.But the mechanism by which the government sells its debt, debiting bank reserves held at the Fed in exchange for the new bills and bonds, could still test the resilience of some smaller institutions. As their reserves decline, some banks may find themselves short on cash, while investors and others may not be willing to lend to institutions they see as troubled, given recent worries about some corners of the industry.That could leave some banks reliant on another Fed facility, set up at the height of this year’s banking turmoil, to provide emergency funding to deposit taking institutions at relatively high cost.“You may see one or two or three banks caught unprepared and suffer the consequences, starting a daisy chain of fear that can permeate through the system and create trouble,” Mr. Goldberg of TD Securities said. More

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    Biden Warns That Climate Change Could Upend Federal Spending Programs

    A chapter in the new Economic Report of the President focuses on the growing risks to people and businesses from rising temperatures, and the government’s role in adapting to them.WASHINGTON — The Biden administration warned on Monday that a warming planet posed severe economic challenges for the United States, which would require the federal government to reassess its spending priorities and how it influenced behavior.Administration economists, in an annual report, said that reassessment should include a new look at the climate-adaptation implications of aid to farmers, wildland firefighting and wide swaths of safety-net programs like Medicaid and Medicare, as the government seeks to shield the poorest Americans from suffering the worst effects of climate change.The White House Council of Economic Advisers also warned that, left unchanged, federal policies like fighting forest fires and subsidizing crop insurance for farmers could continue to encourage Americans to live and work in areas at high risk of damage from warming temperatures and extreme weather — effectively forcing taxpayers across the country to pay for increasingly costly choices by people and businesses.The findings were contained in a chapter of the annual Economic Report of the President, which was released on Monday afternoon and this year focused on long-run challenges to the U.S. economy. They came on a day when the Intergovernmental Panel on Climate Change, a body of experts convened by the United Nations, reported that Earth was barreling quickly toward a level of warming that would make it significantly more difficult for humans to manage drought, heat waves and other climate-related disasters.The White House report details evidence showing the United States is more vulnerable to the costs of extreme weather events than previously thought, while suggesting a series of policy shifts to ensure the poorest Americans do not foot the bill.“Climate change is here,” Cecilia Rouse, the departing chair of the Council of Economic Advisers, said in an interview. “And as we move forward, we’re going to have to be adapting to it and ensuring that we minimize the cost to families and businesses and others.”The report broadly suggests that climate change has upended the concept of risk in all corners of the American economy, distorting markets in ways that companies, people and policymakers have not fully kept up with. It also suggests that the federal government will be left with significantly higher costs in the future if it does not better identify those risks and correct those market distortions — like paying more to provide health care for victims of heat stroke or to rebuild coastal homes flooded in hurricanes.State and local officials, not the federal government, have authority where development happens, so people keep building in high-risk areas, a classic example of what economists call a moral hazard.Johnny Milano for The New York TimesFor example, the report cites evidence that private mortgage lenders are already offloading loans with a high exposure of climate risk to federally backed Fannie Mae and Freddie Mac. It highlights how the federal flood insurance program, which essentially underwrites all home flooding insurance policies in the country, is at risk of insolvency.At a time when administration officials and the Federal Reserve are struggling to stabilize the nation’s financial system, the report warns that home buyers and corporate investors appear to be underestimating climate-related risks in their markets, which could lead to a financial crisis.“Rapid changes in asset prices or reassessments of the risks in response to a shifting climate could produce volatility and cascading instability in financial markets if not anticipated by regulators,” the report says..css-1v2n82w{max-width:600px;width:calc(100% – 40px);margin-top:20px;margin-bottom:25px;height:auto;margin-left:auto;margin-right:auto;font-family:nyt-franklin;color:var(–color-content-secondary,#363636);}@media only screen and (max-width:480px){.css-1v2n82w{margin-left:20px;margin-right:20px;}}@media only screen and (min-width:1024px){.css-1v2n82w{width:600px;}}.css-161d8zr{width:40px;margin-bottom:18px;text-align:left;margin-left:0;color:var(–color-content-primary,#121212);border:1px solid var(–color-content-primary,#121212);}@media only screen and (max-width:480px){.css-161d8zr{width:30px;margin-bottom:15px;}}.css-tjtq43{line-height:25px;}@media only screen and (max-width:480px){.css-tjtq43{line-height:24px;}}.css-x1k33h{font-family:nyt-cheltenham;font-size:19px;font-weight:700;line-height:25px;}.css-1hvpcve{font-size:17px;font-weight:300;line-height:25px;}.css-1hvpcve em{font-style:italic;}.css-1hvpcve strong{font-weight:bold;}.css-1hvpcve a{font-weight:500;color:var(–color-content-secondary,#363636);}.css-1c013uz{margin-top:18px;margin-bottom:22px;}@media only screen and (max-width:480px){.css-1c013uz{font-size:14px;margin-top:15px;margin-bottom:20px;}}.css-1c013uz a{color:var(–color-signal-editorial,#326891);-webkit-text-decoration:underline;text-decoration:underline;font-weight:500;font-size:16px;}@media only screen and (max-width:480px){.css-1c013uz a{font-size:13px;}}.css-1c013uz a:hover{-webkit-text-decoration:none;text-decoration:none;}How Times reporters cover politics. We rely on our journalists to be independent observers. So while Times staff members may vote, they are not allowed to endorse or campaign for candidates or political causes. This includes participating in marches or rallies in support of a movement or giving money to, or raising money for, any political candidate or election cause.Learn more about our process.To address those dangers, the report offers components for a federal climate adaptation strategy. Its recommendations — some of them already in early stages through existing administration actions — include producing better information about climate risk, helping financial markets accurately price that risk and better protecting the most vulnerable from the effects of climate change.Perhaps the most significant proposal, and probably the most politically sensitive, is a call for Washington to exert more pressure on state and local officials, pushing them to be careful about where and how they let people build homes, businesses and infrastructure projects.That proposal would address a core problem that has hindered America’s efforts to adapt to climate change. When people build in places that are most exposed to the effects of climate change — along coastlines, near riverbanks, at the edge of forests prone to wildfires — state and local governments get most of the benefits, in the form of higher tax revenues and economic growth. But when flooding, fires or other major disasters happen, the federal government typically pays the bulk of the cost for responding and rebuilding.Yet for the most part, state and local officials, not the federal government, have authority over where and how development happens — so people keep building in high-risk areas, a classic example of what economists, including the authors of the report, call a moral hazard.In response, the document proposes using federal funds to change the behavior of state and local officials, by tying that money to state and local decisions. That approach has been tried before, with little success. In 2016, the Obama administration suggested adjusting the level of disaster aid provided to states, based on what steps they took to reduce their exposure to disasters. States objected, and the change never happened.Subsidizing crop insurance for farmers could continue to encourage Americans to work in areas at high risk of damage from warming temperatures and extreme weather, the Biden administration will warn.Mark Abramson for The New York TimesAdministration officials said they were already trying to leverage some spending from the infrastructure law President Biden signed in 2021 to influence state and local behavior. The report suggests much more aggressive action could be necessary.It also proposes a rethinking of the nation’s system of insuring against disasters — moving away from separate localized policies that cover fire, flooding and other events, and more toward a nationally mandated “multiperil catastrophe insurance” system that is backstopped by the federal government.Perhaps most sobering for Washington’s current fiscal moment — when Mr. Biden is battling with House Republicans who are seeking sharp cuts to federal spending and raising anew concerns over the growing national debt — is the report’s suggestion that climate effects could subject growing numbers of Americans to heat stroke, respiratory illnesses and other ailments in the years to come. That could further drive up government costs for health programs like Medicare and Medicaid.The Council of Economic Advisers has begun a yearslong effort to project those climate-related effects on future federal budgets, which it detailed in a highly technical paper released this month.The report released on Monday also included chapters on the economics of child care, higher education, digital assets and more.In reviewing Mr. Biden’s economic record, White House economists dived deep into the issue that has bedeviled the recovery on his watch: persistently high inflation. The report lists several explanations for why price growth has surprised administration and outside economists over the last two years but never settles on a primary driver. It does concede that pandemic relief spending under Mr. Biden and President Donald J. Trump may have played a role, by helping Americans save more than usual — and then begin to spend that extra savings.“If the drawdown of excess savings, with current income, boosted aggregate demand, it could have contributed to high inflation in 2021 and 2022,” the report says. More

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    Climate Change Could Worsen Supply Chain Turmoil

    A drought that has crippled economic activity in southwestern China hints at the kind of disruption that climate change could wreak on global supply chains.Chinese factories were shuttered again in late August, a frequent occurrence in a country that has imposed intermittent lockdowns to fight the coronavirus. But this time, the culprit was not the pandemic. Instead, a record-setting drought crippled economic activity across southwestern China, freezing international supply chains for automobiles, electronics and other goods that have been routinely disrupted over the past three years.Such interruptions could soon become more frequent for companies that source parts and products from around the world as climate change, and the extreme weather events that accompany it, continue to disrupt the global delivery system for goods in highly unpredictable ways, economists and trade experts warn.Much remains unknown about how the world’s rapid warming will affect agriculture, economic activity and trade in the coming decades. But one clear trend is that natural disasters like droughts, hurricanes and wildfires are becoming more frequent and unfolding in more locations. In addition to the toll of human injury and death, these disasters are likely to wreak sporadic havoc on global supply chains, exacerbating the shortages, delayed deliveries and higher prices that have frustrated businesses and consumers.“What we just went through with Covid is a window to what climate could do,” said Kyle Meng, an associate professor at the Bren School of Environmental Science and Management and the department of economics at the University of California, Santa Barbara.The supply chains that have stretched around the world in recent decades are studies in modern efficiency, whizzing products like electronics, chemicals, couches and food across continents and oceans at ever-cheaper costs.But those networks proved fragile, first during the pandemic and then as a result of Russia’s invasion of Ukraine, with companies struggling to source their goods amid factory and port shutdowns. With products in short supply, prices have spiked, fueling rapid inflation worldwide.The drought in southwestern China has also had ripple effects for global businesses. It drastically reduced hydropower production in the region, requiring power cuts to factories and scrambling supply chains for electronics, car parts and other goods. Volkswagen and Toyota curtailed production at nearby factories, as did Foxconn, which produces electronics, and CATL, a manufacturer of batteries for electric cars.The Yangtze River, which bisects China, dipped so low that the oceangoing vessels that typically traverse its upper reaches from the rainy summer into early winter could no longer run.Companies had to scramble to secure trucks to move their goods to Chinese ports, while China’s food importers hunted for more trucks and trains to carry their cargo into the country’s interior. The heat and drought have wilted many of the vegetables in southwestern China, causing prices to nearly double, and have made it hard for the surviving pigs and poultry to put on weight, driving up meat prices. ‌Recent rainfall allowed power to be temporarily restored to houses and businesses in western China. But drought persists across much of central and western China, and reservoirs remain at a third of their usual level.Read More About Extreme WeatherHeat and Destruction: A heat dome over California sent temperatures to all-time highs, making it harder to fight the wildfires burning in various parts of the state.Big Hail: Hailstones of record size are falling left and right, and hailstorm damage is growing. But there is surprisingly little research to explain why.Water Crisis: Aging infrastructure and underinvestment have left many U.S. cities’ water systems in tatters. Now flooding and climate shocks are pushing them to failure.Flooding in South Asia: Amid a relentless monsoon season, deadly floods have devastated Pakistan and inundated Bengaluru, India’s Silicon Valley.That means less water not only for hydropower but also for the region’s chemical factories and coal-fired power plants, which need huge quantities of water for cooling.China even resorted to using drones to seed clouds with silver iodide in an attempt to trigger more rain, said Zhao Zhiqiang, the deputy director of the Weather Modification Center of the China Meteorological Administration, at a news conference on Tuesday.At the same time, the coronavirus, and China’s insistence on a zero-Covid policy, continue to pose supply chain risks by restricting movement in significant portions of the country. Last Thursday, Chinese authorities locked down Chengdu, a city of more than 21 million in southwestern China, to clamp down on coronavirus outbreaks.These frequent disruptions in Chinese manufacturing and logistics have added to concerns among global executives and policymakers that many of the world’s factories are far too geographically concentrated, which leaves them vulnerable to pandemics and natural disasters.The Biden administration, in a plan released Tuesday outlining how the United States intends to bolster its semiconductor industry, said the current concentration of chip-makers in Southeast Asia had left the industry vulnerable to disruptions from climate change, as well as pandemics and war.But setting up factories in other parts of the world to offset those risks could be costly, for both businesses and the consumers whom companies will pass their costs on to in the form of higher prices. Just as the pandemic has resulted in higher prices for consumers, Mr. Meng said, so could climate change, particularly if extreme weather affects large areas of the world at the same time.Companies could also face new costs from carbon taxes when shipping goods across borders, as well as higher transport costs for moving products by sea or air, experts say. Both ocean and airfreight are major producers of the gases contributing to climate change, accounting for about 5 percent of global carbon emissions. Companies in both sectors are quickly trying to find cleaner sources of fuel, but that transition is likely to require big investments that could drive up prices for their customers.Natural disasters and coronavirus lockdowns in China have been particularly painful, given that the country is home to much of the world’s manufacturing. But the United States has also felt the rising impacts from extreme weather.A multiyear drought in much of the Western United States has weighed on American agricultural exports. West Coast wildfires have jumbled logistics for companies like Amazon. Winter storms and power outages shut down semiconductor plants in Texas last year, adding to global chip shortages.A wildfire burned through farmland near Mulino, Ore.Kristina Barker for The New York TimesWhite House economists warned in a report this year that climate change would make future disruptions of the global supply chains more common, citing research showing that the global frequency of natural disasters had increased almost threefold in recent decades.“As networks become more connected, and climate change worsens, the frequency and size of supply-chain-related disasters rises,” the report said.The National Centers for Environmental Information, a federal agency, estimates that the number of billion-dollar disasters taking place in the United States each year has skyrocketed to an average of 20 in the last two years, including severe storms, cyclones and floods. In the 1980s, there were only about three per year.Academics say the effect of these disasters, and of higher temperatures in general, will be particularly obvious when it comes to food trade. Some parts of the world, like Russia, Scandinavia and Canada, could produce more grains and other food crops to feed countries as global temperatures rise.But those centers of production would be farther from hotter and more densely populated areas closer to the Equator. Some of those regions may struggle even more than they do now with poverty and food insecurity.One danger is that increasing competition for food could encourage countries to introduce protectionist policies that restrict or stop the export of food, as some have done in response to the pandemic and Russia’s invasion of Ukraine. These export restrictions allow a country to feed its own population, but tend to exacerbate international shortages and push up food prices, further aggravating the problem.The World Trade Organization, citing the damage that protectionist policies could pose, has urged countries to keep trade open to combat the negative effects of climate change.In a 2018 report, the W.T.O. pointed out that the global food trade was particularly vulnerable to disruptions in transportation that might occur as a result of climate change, like rising sea levels threatening ports or extreme weather degrading roads and bridges. More than half of globally traded grains pass through at least one of 14 global “choke points,” including the Panama Canal, the Strait of Malacca or the Black Sea rail network, the report said.Ngozi Okonjo-Iweala, the W.T.O.’s director general, has described trade as “a mechanism for adaptation and resilience” that can help countries deal with crop failure and natural disasters. In a speech in January, she cited economic models estimating that climate change was on track to contribute to severe malnutrition, with as many as 55 million people at risk by 2050 because of local effects on food production. But greater trade could cut that number by 35 million people, she said.“Trade is part of the solution to the challenges we face, far more than it is part of the problem,” Ms. Okonjo-Iweala said.Solomon Hsiang, the Chancellor’s Professor of Public Policy at the University of California, Berkeley, and a co-director of the Climate Impact Lab, agreed that trade might simultaneously make the world more resilient to these disasters and more vulnerable.In some situations, trade can help soften the effects of climate change — for example, allowing communities to import food when local crops fail because of a drought, he said.“That’s on the good side of the ledger,” Mr. Hsiang said. “But the bad side is, as everyone really acutely understands, we are so interconnected from our supply chains that events on one side of the world can dramatically impact people’s well-being elsewhere.” More