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Department of Earth Sciences

Ancient beavers cut trees for food first, not to build dams

Ancient beavers cut trees for food first, not to build dams

By studying the wood-cutting behaviour of ancient beavers that once roamed the Canadian high Arctic, an international team of scientists has discovered that tree predation – feeding on trees and harvesting wood – evolved in these now-extinct rodents long before...

Early Mars was covered in ice sheets, not flowing rivers

Early Mars was covered in ice sheets, not flowing rivers

A large number of the valley networks scarring Mars’ surface were carved by water melting beneath glacial ice, not by free-flowing rivers as previously thought, according to a new study by Western and University of British Columbia researchers. The findings...

New discovery shatters previous beliefs about Earth’s origin

New discovery shatters previous beliefs about Earth’s origin

A new study led by Western University's all-star cosmochemist Audrey Bouvier proves that the Earth and other planetary objects formed in the early years of the Solar System share similar chemical origins – a finding at odds with accepted wisdom held by scientists for...