The Aral Sea was once the world's 4th-largest lake. But in the 1960s, the Soviet Union diverted 2 major rivers to irrigate farmland, and the Aral Sea has been slowly disappearing ever since.
A study traces black carbon from 1991 Kuwait oil fires to ice in northern Tibet. Researchers say this soot could affect glacier melt at the Tibetan plateau, considered the "Water Tower of Asia."
Researchers have said that Totten Glacier, a behemoth with enough ice to raise sea levels by 11 feet (3.4 meters), appears to be melting. Now, they say 4 glaciers west of Totten, and a handful farther east, are also losing ice.
From the months-long eruption of Hawaii's Kilauea Volcano to a strange object discovered on the surface of Mars - and more - here's a quick roundup of the stories our readers enjoyed most in 2018.
The elusive fossa, deepsea corals and a tropical frog which has developed resistance to a deadly fungus. Here are 3 stories from 2018 that remind us how awesome the animal world is.
A new study suggests that a tsunami of cosmic energy from a supernova killed off large ocean animals - including the huge megalodon shark - 2.6 million years ago.
This year’s report shows that the Arctic region experienced the 2nd-warmest air temperatures ever recorded, the 2nd-lowest overall sea-ice coverage, and lowest recorded winter ice in the Bering Sea.