Although the Earth’s been decidedly blue for 600 million years, rising populations of phytoplankton caused by rising temperatures are once again causing the world’s oceans to turn green.
The guardians of democracy are protesting Trump, calling their representatives, writing letters and staying informed. Can they succeed?
A supercomputer simulation reveals that extreme heat, volcanic activity, and harsh conditions could drive humanity extinct.
A new map reveals that a sudden nuclear attack could incinerate 75% of the US population, totaling up to 250 million.
PICKS are stories from many sources, selected by our editors or recommended by our readers because they are important, ...