People visit a memorial outside Sandy Hook Elementary School in Newtown, Conn., on Dec. 15. Spencer Platt/Getty Images hide caption

toggle caption Spencer Platt/Getty Images

An overweight child reads her part during a skit that was in a 2010 program promoting healthy lifestyles sponsored by Children's Hospital near Denver. John Moore/Getty Images hide caption

toggle caption John Moore/Getty Images

According to a study published in Pediatrics, boys are entering puberty six months to two years earlier than they did in past studies. hide caption

toggle caption

People at a Denver party early this month celebrate the recognition of an amendment to the Colorado constitution legalizing recreational use of marijuana. Brennan Linsley/AP hide caption

toggle caption Brennan Linsley/AP

There's new evidence that kids can reduce calories and feel full by snacking on veggies and cheese instead of chips. famfriendsfood/ hide caption

toggle caption famfriendsfood/

A woman holds a child as people line up to enter the Newtown Methodist Church near the scene of the elementary school shootings in Newtown, Conn. Douglas Healey/Getty Images hide caption

toggle caption Douglas Healey/Getty Images

Does a little sugar water before shots really help ease a babies' pain? If only they could tell us. Dmitry Naumov/ hide caption

toggle caption Dmitry Naumov/

Did eating binges come first? hide caption

toggle caption

Maribel Ramos, 13, has both sickle cell disease and an abnormality of blood vessels called moyamoya. Both put her at risk of stroke, and, together, they add up to a 95 percent chance of a major stroke. Richard Knox/NPR hide caption

toggle caption Richard Knox/NPR

A boy works at an illegal gold mine in northern Nigeria. Lead from these mines has sickened thousands of children in the region. David Gilkey/NPR hide caption

toggle caption David Gilkey/NPR

NPR thanks our sponsors

Become an NPR sponsor