EarthCave diver explores a Mexican sinkhole in atmospheric photograph This claustrophobia-inducing image is taken from photographer Martin Broen's new book Light in the Underworld, a collection of shots from the Yucatán’s cenotes, or sinkholes Regulars
EarthSurprise decision not to define the Anthropocene shocks scientists A proposal to define the Anthropocene, a geologic epoch defined by human activity, has been rejected – surprising even scientists who consulted the voting group News