A baby hatch that is fixed in a window at Waldfriede Hospital in Berlin. Mothers can bring unwanted babies and leave them anonymously. Baby boxes are a revival of the medieval "foundling wheels," where unwanted infants were left in revolving church doors.
When they eat out at a restaurant, kids consume more calories than they do at home. Here, members of the Long Island Gulls hockey team enjoy a lunch at TGI Friday's back in 2007 in Marlborough, Mass.
Bruce Bennett/Getty Images
Two boys study together at a Chicago yeshiva in 2009. Public health officials say this type of close physical contact caused a mumps outbreak to spread throughout several orthodox Jewish communities in and around New York City.
M. Spencer Green/AP
An image of researchers at Oregon Health & Science University removing the nucleus from the mother's cell before it's inserted into the donor's egg cell.
Courtesty of Oregon Health & Science University