A study of prehistoric skeletons from the Italian Alps shows that society may have been organized around fathers and that Ötzi the Iceman had a unique family lineage.

When two fluids don't mix well, they sometimes form strange patterns called "viscous fingering," or Saffman-Taylor instability. Studying these patterns can help scientists understand how to design systems for carbon storage, a key part of managing climate change.

A vast network of inverted channels, formed of sediment laid by ancient rivers, implies Mars was once a much rainier place than we thought.

Half a dozen fragments of the moon may briefly orbit Earth at any given time, before moving on to circle the sun, new research suggests.