Arctic sea ice hits lowest winter level as heat records are shattered worldwide

Arctic sea ice levels are crucial to Earth's climate because, without the ice reflecting sunlight, more heat energy goes into the oceans.

• Mar 27

Sharks in Bahamas test positive for caffeine, painkillers, cocaine

Marine biologists found detectable levels of caffeine, cocaine and the over-the-counter painkillers in the blood of 28 sharks.

• Mar 26

What to know about the "wild, wild West" of viral peptide claims

Here's what to know about peptides, what they can and can't do, and what's driving viral claims about possible health benefits online.

• Mar 26

Amputee sea turtle being tracked at sea from space

The staff at a Florida sea turtle hospital is monitoring some animals they've rehabilitated from space -- especially amputees, such as one they named Amelie, who's back at sea.

• Mar 26

600-year-old pinot noir grape seed found in medieval hospital

The seed reveals that people in France have been cultivating the popular variety of grape since at least the 1400s, scientists say.

• Mar 24

Pit viper among new species discovered in cave in Cambodia

Researchers in Cambodia surveyed dozens of previously unexplored caves and found several species never seen before, including a pit viper that is still being studied.

• Mar 24

How a fun nature app aids science

The iNaturalist cellphone app not only helps users identify plant, animal and insect species; it also provides invaluable data to scientists studying biodiversity, species decline, and habitat loss. It also provides opportunities for fun: David Pogue joins iNaturalist fan Martha Stewart in a "bioblitz" – a timed competition with other users to spot and ID species.

• Mar 22

Discovery of 1949 whale recording could unlock mysteries of ocean

The song is that of a humpback whale and was recorded by scientists in March 1949 in Bermuda, researchers said.

• Mar 16

Sea levels higher than thought due to "methodological blind spot," study says

A new study in the journal Nature says most sea level rise research may have underestimated coastal water heights by an average of 1 foot.

• Mar 5

NASA announces major overhaul of Artemis moon program "to take down risk"

NASA Administrator Jared Isaacman announced significant changes to the agency's Artemis program, which aims to land on the moon in 2028.

• Feb 27

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