West Antarctica ice sheet existed 20 million years earlier than previously thought

The results of new research mark the beginning of a new paradigm for our understanding of the history of Earth's great global ice sheets. The research shows that, contrary to the popularly held scientific view, an ice sheet on West Antarctica existed 20 million years earlier than previously thought.

Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/E...