Climate change denial is a form of science denial characterized by rejecting, refusing to acknowledge, disputing, or fighting the extensive evidence for anthropogenic global warming that has led to a
Climate change denial sign in Sudbury, Canada (2016)
Percentage of documents taking each overall position on climate change as real and human-caused, 1977–2014. Acknowledgement (lines indicate the inclusion of reasonable doubt) Acknowledgement and doubt Reasonable doubt Doubt
A protestor demonstrating as part of the "Exxon knew" movement in Washington, DC in 2015
Present-day climate change includes both global warming—the ongoing increase in global average temperature—and its wider effects on Earth's climate system. In a broader sense, climate change also incl
Climate change denial
…It'll start getting cooler, you just watch. [...] I don't think science knows, actually. The Republican Party in the United States is unique in denying anthropogenic climate change among conservative political parties in the Western world. In 1994, according to a leaked memo, the Republican strategist Frank Luntz advised members…
Sea ice reflects 50% to 70% of incoming sunlight, while the ocean, being darker, reflects only 6%. As an area of sea ice melts and exposes more ocean, more heat is absorbed by the ocean, raising temperatures that melt still more ice. This is a positive feedback process.
Different levels of global warming may cause different parts of Earth's climate system to reach tipping points that cause transitions to different states.
Ecological collapse. Coral bleaching from thermal stress has damaged the Great Barrier Reef and threatens coral reefs worldwide.
Extreme weather. Drought and high temperatures worsened the 2020 bushfires in Australia.