"Repent, George W!" Said the Ticktockman

Remember the Bulletin of the Atomic Scientists and their "Midnight's almost here oh wait it's not wait no it is" Doomsday Clock? It's being moved forward again, but not because the threat of nuclear armageddon has increased. It's being moved because of climate change.

Experts assessing the dangers posed to civilisation have added climate change to the prospect of nuclear annihilation as the greatest threats to humankind. As a result, the group has moved the minute hand on its famous "Doomsday Clock" two minutes closer to midnight.
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"When we think about what technologies besides nuclear weapons could produce such devastation to the planet, we quickly came to carbon-emitting technologies," said Kennette Benedict, executive director of the Chicago-based BAS.

You can spend five minutes kissing your loved ones before doom strikes; alternatively, dig into Reason's global warming archives.