Nature doesn’t follow blueprints, and sometimes the result is strange enough to stop you in your tracks. Around the world, erosion, lava, and sediment have shaped landscapes that feel less like ...

Beneath the United States lies a surprising network of caves shaped over millions of years. Some feel almost otherworldly, with strange rock formations and the occasional glow from naturally occurring ...

NASA’s latest images from Mars show a rock that looks less like a random boulder and more like something deliberately carved, a sculpted shard standing alone on the dusty plain. The discovery has ...