This phenomenon, called marcescence, adds a unique dimension to the winter landscape, and gives me something to ponder while ...

Scramble high enough above the tree line in the mountains ... which adds insulation. The dead leaves help the plants withstand freezing at night and, simultaneously, save the night’s cold ...

Scanning our samples took all night, but when we stumbled out of the building, we had images capturing every cell in exquisite detail. We found that the new leaves of once-irrigated trees were ...