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When the oceans died and life changed forever

A rapid climate collapse during the Late Ordovician Mass Extinction devastated ocean life and reshuffled Earth’s ecosystems. In the aftermath, jawed vertebrates gained an unexpected edge by surviving in isolated marine refuges. Over millions of years, they diversified into many

Bob Weir: A Life in Photos

Bob Weir, the singer, songwriter, guitarist and co-founder of the Grateful Dead, died today at age 78. Weir helped shape the Dead’s 60-year legacy as the leaders of psych-rock, and became known as a restless musician who toured solo and with several side bands well into his