LifeGenetic clue to high heart risk of black Americans Researchers are closing in on a biological explanation for some striking variations in risk of heart disease in the US News
LifeCuckoo bee feasts on the larvae of its cousins With its huge eyes and cuddly exterior, this beast sure looks cute. But it is a cuckoo bee – an egg-munching, larva-killing parasite of the nests of other bees Regulars