Scientists have unlocked a 815-million-year-old mystery, revealing an astonishing discovery about Earth’s ancient atmosphere.

Global rhino populations face uneven trends, with javan rhinos nearing extinction due to poaching and habitat threats.

Far below the reach of sunlight, strange deep-sea residents put on a show no one had ever seen before.

Europe is building a colossal underwater tunnel unlike anything seen before—twice the size of Manhattan and set to cut travel times by hours.

A top Google futurist says the end of aging may arrive much sooner than expected. Drawing on decades of accurate tech ...