A stinky planet full of magma, and more...

An unusual hellscape of a planet found 34 light years from Earth has a deep ocean of molten magma surrounded by noxious, hot, rotten egg-type fumes. It just may be the most uninhabitable alien landscape we've ever come across.

PLUS:

• Neanderthal DNA can help explain how human faces form
• Nearly indestructible teeny tiny tardigrades struggle to survive in Martian dirt
• Tiny tags on monarch butterflies allow scientists to track their exact migration route
• A weird fish has a big hole in its head. Scientists finally have an idea why.