When plants talk to each other, what do they say? Some of them compare notes on how to survive a drought and plants that have been subjected to a previous period of drought learn to deal with the stress thanks to their memories of the experience.

This discovery...

The most common type of star in the Milky Way is called a red dwarf--these are smaller, cooler, and longer-lived than our sun. There are 160 BILLION of them in our galaxy and 40% of them have Earth-like planets orbiting them at the right distance for liquid water to exist on their surfaces, a condition that is necessary for life.