winter

Research shows that plants rely on internal alarm clocks to tell them when to wake up from winter.
Katharine Gammon, Contributor
Exposure to the elements brings new challenges to the game.
Chris Gorski, Editor
Cutting-edge research reveals more than meets the icicle.
Devin Powell, Contributor
Zoologist Noga Kronfeld-Schor thinks that studying mood disorders in wild gerbils may yield new clues about the way SAD works.
Katharine Gammon, Contributor