"Doomsday Clock" moves to 5 minutes before midnight.

Scientists have adjusted the "Doomsday Clock" to account for climate change as well as nuclear war. The clock now shows five minutes to midnight - two minutes closer than previously. BBC Video

Climate change is as great a threat to humankind as nuclear annihilation, scientists have warned. Professor Stephen Hawking explained why the world's "Doomsday Clock" was being moved two minutes closer to midnight. BBC Video