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 ...

👋 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 ...

Mysterious micro-burrows in desert marble and limestone were probably made by microbes that lived millions of years ago. Exactly what kind of microbes bored into the rock remains unknown, as does ...

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 ...