A Project of The Annenberg Public Policy Center

Trump Official Wrong About Warming, Again

In an interview on CNBC, Energy Secretary Rick Perry said carbon dioxide is not “the primary control knob” for the Earth’s temperature and climate. But scientists say it’s “extremely likely” that human activity — primarily CO2 emissions — is the main cause of global warming.

Will Paris Have a ‘Tiny’ Effect on Warming?

President Donald Trump and his top environmental official said the Paris Agreement would reduce the global average temperature by only 0.2 degrees Celsius. Former Vice President Al Gore said that’s “not true.” Who’s right?

Gore and Pruitt Debate Paris Targets

Former Vice President Al Gore and Environmental Protection Agency head Scott Pruitt made competing claims about whether the U.S. could have changed its emissions targets under the Paris Agreement, instead of pulling out of the deal. Legal experts side with Gore, who claimed the targets could have been changed.

Trump on China, India and Coal

Trump wrongly claimed that the Paris Agreement would allow China to “build hundreds of additional coal plants” and allow India to “double its coal production by 2020” but the United States “can’t build the plants.”

FactChecking Trump’s Climate Speech

In announcing that the U.S. would withdraw from the Paris Agreement, a global accord aimed at addressing climate change, President Donald Trump made more than a few false and misleading claims.

Trump on the Paris Agreement

Trump made two claims about the Paris Agreement, a global accord aimed at addressing climate change, that require context.

Pruitt on the Paris Accord

Appearing on ABC’s “This Week,” Environmental Protection Agency Administrator Scott Pruitt made two false claims about the Paris Accord, a global agreement aimed at addressing climate change.

Pruitt on Climate Change, Again

The head of the EPA told CNBC that he “would not agree” that “human activity,” or carbon dioxide emissions, is the “primary contributor” to global warming. But scientists say it’s “extremely likely” that human activity is the main cause of warming since the mid-20th century.

Precision in Climate Science

A number of President Trump’s cabinet members have said that scientists cannot precisely measure climate change nor the impact of human activity on climate change. That’s not accurate.

No Data Manipulation at NOAA

Top Republicans on the House science committee claim a former National Oceanic and Atmospheric Administration scientist “confirmed” that his NOAA colleagues “manipulated” climate data for a 2015 study. But that scientist denies that he accused NOAA of manipulating data.