Latest about Planet Earth
'We were in disbelief': Antarctica is behaving in a way we've never seen before. Can it recover?
Antarctic sea ice has been disappearing over the last several summers. Now, climate scientists are wondering whether it will ever come back.
Hundreds of emperor penguin chicks spotted plunging off a 50-foot cliff in 1st-of-its-kind footage
The fledglings are typically reared on floating platforms of sea ice, but an unprecedented decline in the ice extent has driven young onto cliffs.
'Unprecedented,' 'Gobsmacked', 'Unbelievable': Changes in Antarctica's sea ice could have dramatic impacts, says climate scientist Edward Doddridge
In 1898, the crew of the first scientific expedition to Antarctica became trapped inside sea ice around the southernmost continent. Much of that once thick ice is dwindling, says polar researcher Edward Doddridge.
Earth from space: Trio of multicolor lakes look otherworldly in Africa's Great Rift Valley
Three closely grouped lakes in Ethiopia's Great Rift Valley have distinctly different hues thanks to a combination of unique features.
Scientists may have pinpointed the true origin of the Hope Diamond and other pristine gemstones
Researchers suggest that the famed Golconda diamonds, including the Hope Diamond and Koh-i-noor, may have originated from a volcanic outcrop nearly 200 miles from where they were mined.
'Uncharted territory': El Niño to flip to La Niña in what could be the hottest year on record
A quick flip from El Niño to La Niña is coming soon, but what does that mean for the U.S.?
What's the largest waterfall in the world?
If your mind has gone straight to the thundering waters cascading down Venezuela's Angel Falls, think again.
Half of China's cities are sinking, putting most of the country's urban population at risk
Major cities across eastern China are sinking due to groundwater extraction and the weight of buildings, potentially exposing millions of people to flooding and damage in the next 100 years.
