Evolution and a possible geographic 'bias'

A Case Western Reserve University scientist has found that certain prehistoric horse-like mammals in South America evolved differently than their Northern Hemisphere counterparts despite similar changes in climate and ecosystems.

U-M divers retrieve prehistoric wood from Lake Huron

(PhysOrg.com) -- Under the cold clear waters of Lake Huron, University of Michigan researchers have found a five-and-a-half foot-long, pole-shaped piece of wood that is 8,900 years old. The wood, which is tapered and beveled ...