Salt: Mover and shaker in ancient Maya society

Salt is essential for life. As ancient civilizations evolved from hunters and gatherers to agrarian societies, it has not been clear how people acquired this mineral that is a biological necessity. However, an anthropologist ...

Scientists find stable sea levels during last interglacial

Visualize the following: The Earth's climate swings between cold glacial and warm interglacial periods; the last glacial interval was about 20,000 years ago; sea level was about 126 meters (413 feet) below modern sea level ...

Coral reefs losing ability to keep pace with sea-level rise

Many coral reefs will be unable to keep growing fast enough to keep up with rising sea levels, leaving tropical coastlines and low-lying islands exposed to increased erosion and flooding risk, new research suggests.

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