Scientists have discovered a mysterious hole on the surface of Mars, and they have no idea what lies inside it. This pit, ...

Far below the turquoise surface of the Caribbean, an almost perfectly circular patch of dark water drops away so sharply that ...

An underwater sinkhole off the southeastern coast of Mexico’s Yucatan Peninsula is much deeper than previously thought. Scientists have also detected strange conditions at a certain depth, which hints ...

Could Homo sapiens and an archaic and now-extinct species of early human have lived alongside each other on the Indonesian ...