News
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HumansMigrants settled New World in tandem
A genetic investigation of two rare types of mitochondrial DNA in Native Americans suggests that people first entered the Americas in two groups, following separate routes.
By Bruce Bower -
SpaceTuned in to new noise from the cosmos
Unexplained radio noise may be signals from the early universe.
By Ron Cowen -
LifeFifty-two things to do with a bat wing
Bats swim, run, flirt and do lots of other nonflight jobs with their wings -- a fact that may have influenced evolution of the wing's architecture.
By Susan Milius -