RISKY PUFFS Many people assume e-cigarettes are a healthier alternative to smoking. But new animal data suggest vaping may pose immune risks ― and possibly behavioral and reproductive risks for the children of women who vape during pregnancy.
KISSING ANCIENT COUSINS Interbreeding between Neandertals and early modern humans has left a genetic mark on non-Africans that may affect their health.
H. Neumann/Neanderthal Museum
HAZARDOUS CLUMPS The protein collagen (green) coats plaque (red) on the wall of a human artery. These small pockets of plaque are vulnerable to breaking away and possibly triggering a heart attack.