Science + Technology

The Sierra Nevada yellow-legged frog is recovering in Yosemite, a beacon of hope for amphibian conservation.

The Pineapple Express — an atmospheric river originating in the tropical Pacific — walloped western North America in February 2017. These systems are becoming more frequent at higher latitudes, leaving mid latitudes drier.

Concept illustration of non-radiative recombination, in which electron-hole interaction at a defect in the atomic structure results in heat, rather than light, being emitted. Jim Speck will use his Vannevar Bush Award to advance understanding of the physics of such interactions.

If a male mosquito can’t hear a female, it’s as though she doesn’t exist.