A zombie ant fungus must kill its ant host outside the ant colony, in order to to reproduce and transmit its infection, new research shows. But not far outside.
New image of star-forming regions in southern Milky Way. Star cluster NGC 3603 is 20,000 light-years away. Glowing gas clouds NGC 3576 is about half as far.
One of the first auroras of the 2014 autumn season appeared last night at northerly latitudes. Astronaut Reid Wiseman caught it from space. Photographer Göran Strand caught it from Sweden.
This strange fossil - a worm-like creature with legs, spikes and a head that's difficult to distinguish from its tail – has been linked with a group of modern velvet worms.