Giant Sharks Once Roamed the Seas, Feasting on Huge Meals

Today's sharks have nothing on their ancient cousins. A giant shark that roamed the oceans millions of years ago could have devoured a creature the size of a killer whale in just five bites, new research suggests.For their study published Wednesday, re...
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Polio in UK, US, Elsewhere Reveals Rare Risk of Oral Vaccine

For years, global health officials have used billions of drops of an oral vaccine in a remarkably effective campaign aimed at wiping out polio in its last remaining strongholds — typically, poor, politically unstable corners of the world.Now, in a surp...
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On Ukraine’s Frontline, a Fight to Save Premature Babies

POKROVSK, UKRAINE — Echoing down the corridors of eastern Ukraine's Pokrovsk Perinatal Hospital are the loud cries of tiny Veronika.Born nearly two months prematurely weighing 1.5 kilograms (3 pounds, 4 ounces), the infant receives oxygen through a nas...
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