However, he rejected the central warning in the US National Climate Assessment, which said there will be hundreds of billions of dollars in losses by the end of the century due to climate change "without substantial and sustained global mitigation".
US President Donald Trump has said he doesn't believe his own government's latest report on climate change. Released by the White House over the holiday weekend in a transparent effort to bury its findings, this report spells out in detail the prohibitively high costs to our health, economy, environment and communities of failing to act to reduce the production of greenhouse gases and as a result bringing about the worst impacts of global warming.
California is reeling from catastrophic wildfires...
"Right now, we're at the cleanest we've ever been".
Mr Trump has long said he distrusts the consensus by almost all the world's respected climate scientists on the link between human activity and rising temperatures.
Trump said the U.S. is "at the cleanest we've ever been", and that it is other countries that are dirty. And that's very important to me.
European Union leaders to sign off historic Brexit deal
The agreement says that Madrid will be given a say on matters concerning Gibraltar when it comes to future trade deals . Liberal Democrat Brexit spokesman, Tom Brake, said: "The prime minister has caved in once again".
Former Democratic presidential candidate Hillary Clinton accused the Trump administration of trying to hide the report.
"We're just suggesting, Mr. President, if you don't want to believe science or the 1,600-page report your team tried to slip past the American public on Friday, maybe just start with climatekids.nasa.gov".
In October, President Trump accused climate change scientists of having a "political agenda", telling Fox News he was unconvinced that humans were responsible for the earth's rising temperatures. Even more damaging, with the Trump Administration's declared intent to withdraw from the Global Climate Change Agreement reached in Paris, we have abandoned the global leadership that helped gain meaningful commitments from China, India, Brazil, and other large carbon emitters.
At the time, Trump said he wanted to negotiate a new "fair" deal that would not disadvantage USA businesses and workers. In October, Trump said during a visit to inspect hurricane damage in the southern state of Georgia that climate change "is going to go back and forth", rather than be permanent.
If the world fails to act, the researchers warned, there would be some significant and unsafe changes to our world, including rising sea levels, significant impacts on ocean temperatures and acidity, and the ability to grow crops such as rice, maize and wheat.