Climate change blamed for breakdown of currents that circulate heat, nutrients through the Atlantic.
Costa Rica hasn't used fossil for power since 2014, thanks to hydropower.
Arctic sea ice has reached its annual winter peak, which was a record low for the satellite era.
Spring in the United States looks to be a hangover of winter conditions, though the season is warming overall.
Electric vehicles are a useful tool for fighting sweaty city summers reports a new study.
Two valleys underneath Totten Glacier in East Antarctica may be letting in warm ocean water that is melting the glacier's ice shelf.
2015 may only be two months old, but it's already the warmest first two months of any year on record.
Changing temperatures triggering movement of vast movements of fish is behind the high number of sea lion strandings off the coast of California.
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