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Millions under extreme heat threat across the U.S.
Millions of people in the United States are at risk for dangerous or extreme heat on Friday, July 25, 2025, and through the weekend.
July 24, 2025
A mysterious fossil and the evolution of skin and feathers
A fossil of an ancient reptile shows a distinct crest that is made neither of feathers, scales or hair. It's forcing scientists to rethink reptilian evolution.
July 24, 2025
Meet the dragon blood tree. Can this species bleed?
The dragon blood tree is a wonder on the outside and the inside. It has a red sap that solidifies when exposed to oxygen and looks like blood!
July 21, 2025
Grand Canyon landslide due to Meteor Crater impact?
Two world-famous Arizona attractions – the Grand Canyon and Meteor Crater Natural Landmark – might share a hidden connection.
July 20, 2025
Tropical disturbance to impact Gulf Coast this week
A tropical disturbance will bring wind and rain to the Gulf Coast states this week. It has the potential to strengthen into Tropical Storm Dexter.
July 15, 2025
Celebrate Arctic Sea Ice Day with belugas, bears and more
Arctic Sea Ice Day is today, July 15, 2025. And you can participate! Snap pics from a Beluga Boat with attached live cams and classify the whale bits you see.
July 15, 2025
Teenage Greenland sharks’ hangout spot revealed in new study
Scientists have discovered a high number of juvenile Greenland sharks in Skagerrak, a body of water between Denmark, Norway and Sweden.
July 15, 2025
Chimpanzees wear blades of grass in their ears and rears
Some chimpanzees in captivity imitated each other with the seemingly useless activity of putting a blade of grass in their ears and rears.
July 13, 2025
Earth will spin unusually quickly in July and August
The shortest days on Earth for 2025 will be in July and August. But why is Earth spinning faster? It's a bit of a mystery. Get the dates here.
July 11, 2025
What are hole-punch clouds, aka fallstreak holes?
Have you ever seen a fallstreak hole or hole-punch clouds? They're a type of cloud with a flat layer interrupted by a big hole, often with wisps at the center.
July 10, 2025
