Giant animals lived in Amazonian mega-wetland

A land of giants: This is the best definition for Lake Pebas, a mega-wetland that existed in western Amazonia during the Miocene Epoch, which lasted from 23 million to 5.3 million years ago.

Study: Prehistoric horses were homebodies

Unlike today's zebras, prehistoric horses in parts of North America did not make epic migrations to find food or fresh water, according to a new study by the University of Cincinnati.

Researchers study unique underwater stalactites

In recent years, researchers have identified a small group of stalactites that appear to have calcified underwater instead of in a dry cave. The "Hells Bells" in the El Zapote cave near Puerto Morelos on the Yucatán Peninsula ...

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