Timeline of Climate Change: Quick Facts

Written and fact-checked by

The Information Architects of Encyclopaedia Britannica

Photos

Infographic showing a timeline of major climate change milestones from 1896 to 2025, with key events listed on the left. Insets on the right display a graph of rising atmospheric carbon dioxide levels, diagrams of ocean acidification due to carbon dioxide, and a world map highlighting countries that have signed or ratified the Paris Agreement.

See All Images →

Topics

Climate change The Perils of an Early Spring Is Climate Change Real?What’s the Difference Between Global Warming and Climate Change?A Recent History of Climate Change Global warming Greenhouse effect Dansgaard-Oeschger event Season Snowball Earth hypothesis Methane burp hypothesis