A massive new federal report warns that extreme weather disasters, like California's wildfires, heat waves, and this year's hurricanes, are worsening in the United States.
Climate change is already hurting the global economy and will cost the United States hundreds of billions of dollars by century's end unless drastic action is taken to cut carbon emissions, said a USA government report, which he White House called inaccurate.
The National Climate Assessment was written long before the California fires and the hurricanes.
The National Climate Assessment finds that extreme weather disasters "have already become more frequent, intense, widespread or of long duration and have cost the the US almost $400 billion since 2015".
"This report underscores what we are already seeing firsthand: climate change is real, it's happening here, and it's happening now".
Compiled by more than 300 scientists, the Fourth National Climate Assessment Volume II is a congressionally mandated report that spans more than 1,000 pages.
Rising seas and changing temperatures have the potential to drastically shape how people in the United States live - and where they live, according to scientists from across the USA government.
The report notes that the effects of climate change are already being felt in communities across the country, including more frequent and intense extreme weather and climate-related events.
It said global warming would disproportionately hurt the poor, broadly undermine human health, damage infrastructure, limit the availability of water, alter coastlines, and boost costs in industries from farming to energy production.
"Climate change is transforming where and how we live and presents growing challenges to human health and quality of life, the economy, and the natural systems that support us", the report says. The report concluded that warming "could increase by 9°F (5°C) or more by the end of this century" without significant emissions reductions.
Environmental groups said the report underlined their demands for action. "That means we have to focus on us", he said.
But federal officials faced criticism over its timing, with environmentalists, Democratic lawmakers and scientists among those accusing the Trump administration trying to bury the report by releasing it early, on a slow news day the Friday after Thanksgiving.
The studies clash with policy under President Donald Trump, who has been rolling back Obama-era environmental and climate protections to maximize production of domestic fossil fuels, including crude oil, already the highest in the world, above Saudi Arabia and Russian Federation.
The report warns that the frequency of wildfires could increase if climate change is unchecked.
Trump tweeted this week about the cold weather hitting the East including: "Brutal and Extended Cold Blast could shatter ALL RECORDS - Whatever happened to Global Warming?"
The report was initially set to be released in December. As the urgency of climate change continues to grow, leaders in other countries (as well as mayors and governors in the U.S.) have promised to double down on their efforts, largely leaving the US - and, by extension, Trump - by the wayside as the world adapts to changes driven by global warming.
"Future risks from climate change depend primarily on decisions made today", it said.