Olivier Douliery | Pool | Getty Images
President Donald Trump is set to announce whether he is pulling the U.S. out of the historic Paris Agreement.
The announcement, expected Thursday, could have significant ramifications for the environment and the global economy.
Trump has frequently aired his opinions on climate change and global warming, often via Twitter. Here's a look at some of the comments he's made over the years.
"It snowed over 4 inches this past weekend in New York City. It is still October. So much for Global Warming."
Mario Tama | Getty Images
Tweet on Nov. 1, 2011.
"In the 1920's people were worried about global cooling — it never happened. Now it's global warming. Give me a break!"
Paul Souders | Stone | Getty Images
Tweet on May 4, 2012.
"The concept of global warming was created by and for the Chinese in order to make U.S. manufacturing non-competitive."
Kevin Frayer | Getty Images
Tweet on Nov. 6, 2012.
"It's freezing and snowing in New York — we need global warming!"
JaysonPhotography | iStock Editorial | Getty Images
Tweet on Nov. 7, 2012.
"Looks like the U.S. will be having the coldest March since 1996 — global warming anyone?????????"
ablokhin | iStock Editorial | Getty Images
Tweet on March 22, 2013.
"Another freezing day in the Spring — what is going on with 'global warming'? Good move changing the name to 'climate change' — sad!"
George Rose | Getty Images
Tweet on April 3, 2013.
"They only changed the term to CLIMATE CHANGE when the words GLOBAL WARMING didn't work anymore. Come on people, get smart!"
David McNew | Getty Images
Tweet on July 15, 2014.
"As ISIS and Ebola spread like wildfire, the Obama administration just submitted a paper on how to stop climate change (aka global warming)."
Michael Reynolds - Pool | Getty Images
Tweet on Oct. 14, 2014.
"It's really cold outside, they are calling it a major freeze, weeks ahead of normal. Man, we could use a big fat dose of global warming!"
Greenwich Village
Hiroyuki Matsumoto | Photographer's Choice | Getty Images
Tweet on Oct. 19, 2015.
"I think right now … well, I think there is some connectivity. There is some, something. It depends on how much. It also depends on how much it's going to cost our companies. You have to understand, our companies are noncompetitive right now."
Timothy A. Clary | AFP | Getty Images
Nov. 22, 2016: Speaking to The New York Times on whether human activity is or isn't connected to climate change.
I will be announcing my decision on Paris Accord, Thursday at 3:00 P.M. The White House Rose Garden. MAKE AMERICA GREAT AGAIN!
Brooks Kraft | Corbis Historical | Getty Images
Tweet on May 31, 2017.
