The discovery of a super-Earth orbiting farther from its star than Saturn orbits the sun suggests that super-Earth exoplanets are common in our galaxy.
Did it rain on ancient Mars? A new study suggests that heavy precipitation - rain or snow - helped form rivers that fed into lakes billions of years ago.
Do chimpanzees meet in parties to ingest alcohol like we do? For the first time, scientists have recorded chimps repeatedly eating and sharing fermented fruit.
To search for alien life - even exotic life beyond our imagination - a new study suggests looking for "patterns of energy" instead of just organic molecules.