Several of California’s Sierra glaciers that persisted through the Holocene are now on track to vanish within this century.

Preamble : la Cueva del Mirón : a grand cave site in the Cantabrian cordillera of northern Spain / Lawrence Guy Straus -- The excavation of El Mirón Cave / Lawrence Guy Straus -- The Río Asón drainage ...

Here’s what you’ll learn when you read this story: Etchings of camels and other animals found on sandstone walls in the Saudi Arabian desert seem to suggest ancient migration routes to water. During ...