Watch: Baby elephant fails at piggy back

In celebration of the end of the week, we have an adorable sighting of a baby elephant trying to get a piggy back ride from another calf.

Five facts about Antarctic marine sanctuaries

Agreement was reached to create a vast US and New Zealand-backed Antarctic marine sanctuary. Here are five things to know...

Uber has vision for on-demand aircraft

Uber on Thursday laid out a vision for on-demand aircraft that can whisk commuters to home or work.

'Humans decimating wildlife populations'

Nearly three-fifths of all animals with a backbone - fish, birds, amphibians, reptiles and mammals - have been wiped out since 1970...