Scientists at NASA’s Jet Propulsion Laboratory have put out a new video to address false claims about the “Mayan apocalypse,” a non-event that some people believe will bring the world to an end on Dec. 21.
In the video, which was posted online Wednesday (Mar. 7), Don Yeomans, head of the Near-Earth Objects Program Office at NASA/JPL, explains away many of the most frequently cited doomsday scenarios.

The world’s largest and longest particle accelerator starts preliminary testing today. Doomsayers will say it is the beginning of the end of the world. Stephen Hawking and others say it is perfectly safe. Here’s a cool little rap about it.