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.
CNN's Miguel Marquez reports on the drought farmers are facing out West.
Droughts in California, snowstorms on the East Coast, floods in the UK's. CNN's Brian Todd looks at the science that connects the extreme weather patterns across the globe.
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.
A measles-like virus could be responsible for the deaths of hundreds of bottlenose dolphins along the East Coast - an unusual spike that has scientists concerned.
CNN's John Zarrella reports on how toxic algae is leading to the death of manatees in Florida.