A doula -- ancient Greek for 'a woman who serves' -- isn't a doctor or midwife, but gives support to expectant mothers before, during and after childbirth. In New York, By My Side Birth Support provides free doula services to…

The giant panda is an endangered species, threatened by destruction of their natural habitats and low birth rates. At zoos, like Smithsonian's National Zoo, veterinarians and zoologists attempt to understand the reproductive cycle of these large mammals to prevent their…