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A rare photo of "type D" killer whales off South Georgia island, located between South America and Antarctica, shows the whales' blunt heads and tiny white eye patches.

Mysterious Type Of Killer Whale, Sought After For Years, Found In Southern Ocean

The notion that there might be some new kind of killer whale emerged in 1955, when photos from New Zealand showed a bunch of unusual-looking whales stranded on a beach.

As the climate warms, drought is killing large numbers of trees in California. Scientists are looking to the past to try and understand how the ecosystems of today may be changing.

To Predict Effects Of Global Warming, Scientists Looked Back 20,000 Years

More than 40 researchers concluded that climate change would make ecosystems such as deciduous forests, grasslands and Arctic tundra unrecognizable.

Adam Mosseri, head of Instagram, speaks about the social media platform's anti-bullying efforts at the F8 developers conference in San Jose, Calif., on April 30.

Instagram Now Lets You Control Your Bully's Comments

Blocking a bully on social media doesn't always bring an end to online abuse. To try to address this, Instagram has a new anti-bullying feature called Restrict.

The herbal supplement kratom is marketed as a treatment for a wide variety of health problems.

FDA Warns About Dangers Of 'Natural' Opioid Kratom

The Food and Drug Administration says there's not enough proof that the herbal supplement kratom works for opioid withdrawal and other conditions. It also says kratom can cause health problems.

She nailed it! Uttrasree Ilango, 17, can hold lotus pose on a bed of 2,209 nails for an hour. Her younger brother Dheepak, 14, can hold crow pose without cracking an egg.

Teen Yogis Do Yoga On Nails And Eggs

Uttrasree Ilango just got a spot in a book of records for doing lotus pose for an hour atop 2,209 nails. Her brother can perch on eggs without cracking them. What's their secret?

As NASA Aims For The Moon, An Aging Space Station Faces An Uncertain Future

The International Space Station is getting older, and NASA is hoping that commercial businesses will take over so that the space agency can focus its efforts on a return to the moon.

These PET scans show the normal distribution of opioid receptors in the human brain. A new study suggests ketamine may activate these receptors, raising concern it could be addictive.

Ketamine, A Promising Depression Treatment, Seems To Act Like An Opioid

A Stanford research team finds that ketamine's ability to quickly relieve depression depends on activating the brain's opioid system. The finding raises new questions about the drug's safety.

This hillside was covered with tiny, yellow wildflowers in on the Temblor Range at Carrizo Plain National Monument 2017.

A Little More Rain Could Bring Another Wildflower 'Super Bloom' To California

California's wet and rainy winter is getting both wildflower experts and enthusiasts excited about the potential of another "super bloom" this spring.

How To Survive A 10,000-Foot Fall

Sometimes people who fall great distances survive. How do they get so lucky? Scientists share the secrets of an implausible safe landing.

Yogurt selections like this one at a Los Angeles 365 by Whole Foods Market store are getting larger, but a new U.K. study warns that many contain lots of added sugar.

Yogurt May Not Be So Healthy If It's Pumped Full Of Sugar

A study of some 900 yogurts sold in supermarkets in the U.K. found a shocking amount of sugar is hiding in this so-called healthy food, particularly in organic yogurts.

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