The bacteria responsible for the Black Death that killed a third of Europe’s population from 1347 to 1351 has changed little since then as health and hygiene advances held it in check, scientists said.
U.S. regulators, facing resistance from companies including Nestle SA, the world’s biggest food company, and Kellogg Co., scaled back proposed guidelines that may have limited advertising to children for food with added sugars, salt and saturated fat.
The naked mole rat, a hairless African rodent with a long life-span and resistance to tumors, may hold clues to countering cancer and age-related ailments in people, said scientists who have mapped the creature’s genome.
Women who take folic acid supplements before conceiving and in the early weeks of pregnancy may reduce their child’s risk of severe language delays, a Norwegian study found.
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