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New research suggests it may be possible to spot people in the early stages of Alzheimer's by testing their ability to recognize fragrances. The goal is a quick and inexpensive screening test.
Some police shooting victims like Alton Sterling and Philando Castile become national symbols. Their faces are splashed across the media, and their names become hashtags. So why are others forgotten?
Dolly, the first cloned mammal, had early arthritis and died young, raising concerns that clones age prematurely. But a study confirms the sheep's four sister clones are healthy and aging well.
Journalists, dissidents, human rights workers all tell stories of being followed and harassed by Russia's security services. They range from the comical to the frightening.