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Health & MedicineCoffee’s curious heart effects
Very high or low daily consumption of coffee appears to pose far more of a heart risk than drinking moderately.
By Janet Raloff -
PhysicsMarrying matter and light
Physicists have created circuit components that, in a manner analogous to atoms, meld with light, opening new ways to study fundamental light-matter interactions.
By Peter Weiss -
The tree of life, with tangled roots
Two ancient, rudimentary organisms merged to create the first complex cell, new data suggest.
By Ben Harder -
Schizophrenia takes fatal turn in China
Suicides among people with schizophrenia are a major public-health concern in China.