Yellowstone National Park trail shut down after first bear attack in 4 years

Grizzly bears and black bears coexist in Yellowstone, according to the National Park Service, and it's unclear which one was involved in the attack.

Brookfield Zoo Chicago's rescued axolotl
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Brookfield Zoo Chicago is inviting the public to help name one of its most charming residents. (Video: ? Brookfield Zoo Chicago)

Expert explains how warm, dry weather could impact Chicago?s fall colors
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Dr. Christy Rollinson from The Morton Arboretum explains how drought and late-season heat may cause trees to drop leaves early and change the timing of peak fall foliage.

Hikers on psychedelic mushrooms rescued after getting lost in NY mountains

A hiking trip took a “trippy" turn that ended with a group having to be rescued from a popular mountain destination in New York State last month.

Arkansas man, 72, mauled by 70-pound bear

The man suffered extensive injuries to his face and upper body before being airlifted to a hospital.

Man dies in shark attack at Sydney beach

A man in his 50s was killed by a large shark while surfing at a beach near Sydney, Australia on Saturday.

Rare manatee sighting in Texas temporarily halts $64 million construction project

According to the Texas Marine Mammal Stranding Network, sometimes West Indian Manatees migrate from Florida to Texas in the summer. These sightings are still rare.

Wildlife Photographer of the Year sneak peek: See the stunning photos

A dramatic stand-off between a lion and a cobra. A lone elephant wading through a landfill in Sri Lanka. Here's a sneak peek at the Wildlife Photographer of the Year's top photos.

Chicago forests dominated by invasive shrubs that threaten wildlife | ChicagoNOW
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Across the Chicago region, nearly 80 percent of our forests are now dominated by invasive shrubs like buckthorn and honeysuckle, but new research and ongoing restoration efforts are offering hope for turning things around. The Morton Arboretum's Lindsay Darling explains more about the efforts.

Watch: Video shows rare fish's ability to climb rocks

The tiny fish were seen swimming, or rather "climbing" up rocks, a behavior that hadn't been seen before.