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Russia sends tanks, troops into eastern Ukraine

KIEV, Ukraine -- Russian tanks and troops fired their way into eastern Ukraine on Thursday and seized a strategic gateway town on the road to the heavily militarized Crimean peninsula in a brazen display of support for pro-Russia separatists ...

Study yields full genetic snapshot of Ebola virus

It's a murderer on a killing spree, and now it has a new -- and remarkably complete -- genetic mug shot.

An international team of scientists has sequenced the RNA of 99 Ebola virus samples collected during the early weeks of the outbreak in ...