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.

NOAA orders next generation of hurricane hunter aircraft

The National Oceanic and Atmospheric Administration announced recently it awarded a contract to Georgia-based Lockheed Martin Aeronautics for two specialized C-130J Hercules aircraft. The planes are expected to join NOAA’s fleet by 2030.

Rare 'ring of fire' eclipse to dazzle Easter Island, parts of South America

An annular solar eclipse, known as the "ring of fire," will be visible on Wednesday, primarily over the Pacific, with Easter Island, parts of Argentina, and Chile in its path.

Nearly 200 chemicals linked to breast cancer could be exposed to people’s food: Study

Researchers said the study is a good jumping off point to improve the world’s understanding of what outside factors cause breast cancer and how to better prevent exposure.

Crews rescue ‘badly’ burned bear from Nevada wildfire

As crew members continued to battle the Davis Fire in Western Nevada, they rescued a bear found with severe burns.

Space station crew returns to Earth
video

NASA astronaut Tracy Dyson and Roscosmos cosmonauts Nikolai Chub and Oleg Kononenko returned home from the International Space Station. Their Soyuz MS-25 spacecraft had a parachute-assisted landing on the steppe of Kazakhstan. Dyson concluded her fourth spaceflight with the landing of the Soyuz. Dyson's mission spanned 184 days, 2,944 orbits of the Earth, and a journey of 78 million miles. While on orbit, she conducted an array of experiments and technology demonstrations that contribute to advancements for humanity on Earth and NASA?s trajectory to the Moon and Mars.

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.

Wisconsin bear attack: Boy shoots, kills animal mauling father

A 12-year-old boy shot and killed a wounded black bear as it was mauling his father near their hunting cabin in the thick western Wisconsin woods.