Deep inside White River Cave in Georgia, explorers pushed through tunnels covered in graffiti and filled with bats. The passages twisted through dark rooms and narrow ledges where old ropes hung from ...

Deep beneath the Balkans, a massive sulfur-fed cave hosts a colony of 111,000 spiders in one shared web, defying typical ...

UC San Diego bioengineer Kiana Aran spent five days sealed inside a pitch-black chamber in rural Poland last November, ...