Wolf Blitzer delivers the most important breaking news and political, international, and national security stories of the day. Tune to The Situation Room weekdays 5-7pm ET on CNN.
Scorching heat and stronger hurricanes, floods and fires, torrential downpours and droughts: The White House is warning in a brand new report that the effects of climate change are here and only getting worse. CNN's Brian Todd investigates the report.
In an interview with Wolf Blitzer, Newt Gingrich defends a series of tweets in which he called for Secretary of State John Kerry to resign from his post over his policy on climate change.
Was climate change a key cause of Super Typhoon Haiyan? CNN's Brian Todd reports from the National Weather Service HQ.
A UN panel says scientists are now 95% sure that human activity is behind the sharp increase in global temperatures since the 1950s. CNN's Tom Foreman shows us at the evidence and the effects.