Shot of beginning stages of birth at calving Pine Island Glacier iceberg taken from space

A flying saucer skidding on seafloor? More exploration, better equipment may explain mystery

Koko points to mouth to indicate toothache

One observer says it has to be a spaceship, but experts offer plausible explanation

Volcanologists find a stagnant mountain can reawaken very quickly, in just several decades

Nothing unusual, meaningful, ominous or auspicious? Depends on who you ask

415 million years ago, the meandering, branching waterways we know virtually didn't exist

Authorities in Brazil fear Peru drug smugglers battled with uncontacted Indians

Research helps solve mystery of Amazonian tribe's divergent head shapes

Prints suggests dinosaur clawed sediment as it swam

Dating of cremated remains shows burials took place as early as 3000 B.C.