What Changed First When You Went Through Puberty?

Everybody goes through puberty differently. For me, height came first: I shot up 5-inches during the summer before high school – and there was definitely some mental whiplash when I could suddenly see over a lot of my classmates’ heads. Tell us how your body first let you know there were some changes on the way!
» 5/23/15 2:00pm Saturday 2:00pm

Would You Customize Your First Born Child?

The recent announcement by a British medical ethics board in favor of an experimental three-parent IVF treatment—wherein the genetic material from three donors, not the usual two, is used to create a fetus—and has once again stirred the pot of reproductive controversy. So where exactly is the line between prenatal… » 3/16/14 6:02pm 3/16/14 6:02pm