Thousands of 12,500-year-old rock paintings dubbed the "Sistine Chapel of the ancients" have been found in the Amazon jungle.

Astronomers have spied a monster radio jet in the distant universe that’s twice the width of the Milky Way galaxy.

It's been nearly five years since a lightning-fueled wildfire caused major damage in Big Basin State Park. That includes scorching some thousand-year-old redwoods.

Throughout history, big cats like lions, tigers, leopards, and jaguars have held significant symbolic power in many ancient civilizations. Valued for their strength, courage, and majesty, these ...