US winter weather outlook: What will El Niño bring?

NOAA's winter winter outlook says El Niño will bring a warm and wet winter for much of the U.S.

Amazon wildfires hide another threat to the rainforest

Amazon wildfires are weakening the rainforest’s ability to absorb carbon, as ozone pollution damages trees that survive the flames.

Arizona’s Chiricahua poised to become 64th US National Park

Chiricahua National Monument in the southeastern corner of Arizona is poised to become the U.S.'s 64th national park. Read more about it here.

Isaias is a major hurricane, headed for the Gulf Coast

Hurricane Isaias is the 1st hurricane of the 2026 Atlantic season. It is now a major hurricane, making landfall around midnight tonight near Pensacola.

Why leaves change color in the autumn

Did you know the vivid colors of autumn leaves are there throughout spring and summer, but hidden? Here's why leaves change color in the fall.

Kelvin waves: Will El Niño bring coastal flooding to American west?

As El Niño continues to strengthen, it could cause Kelvin waves to move east and eventually trigger coastal flooding in the North American west.

Hurricane Nolo is now Typhoon Nolo. Where is it going next?

Hurricane Nolo became Typhoon Nolo on October 4, 2026, after crossing the International Date Line. It is slowly churning toward Japan.

What are the world’s loudest birds? Here are 2 contenders

What are the world's loudest birds? Researchers say the bare-throated bellbird and red-legged seriema are 2 major contenders.

And the Fat Bear Week winner is … Backpack!

Congrats to Backpack, the winner of Fat Bear Week 2026! Take a look at the final brackets and see where your favorite fatties fell.

The Komodo dragon is the world’s largest living lizard

The Komodo dragon is the world’s largest lizard. It's a venomous predator that can hunt, swim between islands and reproduce without a mate.