Huge ancient underground tunnels have been discovered in Brazil and Argentina, and the source of these huge structures is not believed to be due to humans or natural geological processes. Reaching ...

At age 75, Vadevino Alano keeps up a brisk pace as he strides through the forest on the way to the Armadillo’s Den — a spectacular cave in southern Brazil. When he reaches the cave’s opening, Alano is ...

👋 Welcome to 5 Things PM! “South Park” is back with a vengeance. The show’s 27th season premiered this week, taking swings at President Donald Trump and Paramount, its parent company. The ingredients ...

To find black holes we usually have to look thousands of light-years away. But a new study suggests we could find evidence of them right here on Earth, as tiny tunnels they’ve carved out in rocks or ...