WHO raises alarm on disease in flood-hit areas of Pakistan

The World Health Organization raised the alarm Saturday about a "second disaster" in the wake of the deadly floods in Pakistan this summer, as doctors and medical workers on the ground race to battle outbreaks of waterborne ...

380-million-year-old heart illuminates evolutionary history

Researchers have discovered a 380-million-year-old heart—the oldest ever found—alongside a separate fossilized stomach, intestine and liver in an ancient jawed fish, shedding new light on the evolution of our own bodies.

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