Mount Everest, the world's tallest mountain, is still growing — here’s why

Mount Everest is growing taller every year, and new research suggests that the merger of two rivers thousands of years ago plays a key role in its rise.

Dolphins smile at each other while playing, study says

Dolphins are actually smiling at each other when they open their mouths while playing with one another, according to a recent study out of Italy.  

Fat Bear Week starts a day late after bear kills rival on live webcam

Fat Bear Week is back, but the annual contest that celebrates brown bears and their healthy appetites was delayed after a bear killed another bear on a live webcam.

Scuba divers have 'once-in-a-lifetime' close encounter with great white shark near Catalina

Scuba divers near Catalina had a rare and thrilling encounter with a 15-foot Great White Shark, capturing the moment on video as the shark calmly circled them before swimming away.

Watch: 'Comet of a century' puts on beautiful show while zooming by Earth

Astronomers said Comet Tsuchinshan-ATLAS reached perihelion, its closest point to the Sun, on Sept. 27 and will spin back around for another visit to Earth's neighborhood. On or before Oct. 12 will be the next chance to see the celestial show.

Tommy Lee, Brittany Furlan's dog attacked by coyote

Furlan shared the video on Instagram showing the terrifying moment the aggressive coyote grabs their dog, Neena, by the pool then just takes off.

Bear cozies up under Sierra Madre home

It's not uncommon to find bears in foothill areas like Sierra Madre, but what about underneath a home?

Earth is getting a temporary second moon this fall

Earth will soon have a visitor — and not of the extraterrestrial kind. Astronomers found a small asteroid that will orbit our planet this fall, becoming a "mini-moon" temporarily.

When to see Tuesday’s partial lunar eclipse of the Supermoon

Tuesday night's Supermoon is one of the last of the year, and this one is even rarer, as it coincides with a partial lunar eclipse.

Lauren Sánchez says she's taking all-women crew up to space

Lauren Sánchez, partner of Amazon founder Jeff Bezos, announced that she's taking all-women crew up to space. "Women are explorers, too," she said during an interview on GDLA.