Central America braces for Tropical Storm Pilar

Central American nations braced Monday for Tropical Storm Pilar, with authorities in El Salvador reporting two deaths linked to heavy rains and wind preceding the arrival of the tempest.

Environmental physicist discusses marine heat waves

An extraordinary heat wave is assailing the world's oceans with an intensity that is surprising climate researchers. Environmental physicist Nicolas Gruber provides some context.

Exploring Earth's mantle through microseisms

The ocean is constantly whirring with activity. The pressure from this constant roiling and swelling is one cause of microseisms—random, nearly imperceptible vibrations of Earth that also can be produced by human activities ...

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