A boy using a computer mouse and keyboard

A boy using a computer mouse and keyboard

Boy using digital tablet at home

Boy using digital tablet while sitting on armchair at home

Boy listening music on headphones while using laptop at home

Happy family looking at boy using microscope on hardwood floor

Teenage boy with skateboard using smart phone

Close-up of teenage boy using smart phone while sitting by table at home

A toddler using a computer keyboard

Teacher using digital tablet with students in classroom

Father with children using digital tablet on sofa at home

Girl looking at brother using microscope at table in house

A senior man using binoculars

A senior woman using binoculars

One boy looking at his friend who is using an asthma inhaler

little boy using a pda

Illustration of girl using Heimlich maneuver on boy.

boy using a computer at the library

A man using binoculars looking out

father and son using gps on boat

Illustration of a young boy text messaging using his cellular phone

A man using binoculars looking out and mountains behind him

Boy and a girl in school uniform studying

A businessman on the top of a high rise using binoculars

Illustration of boy using upper extremity muscles to stand up. Upper left: child on knees and elbows. Upper right: child supports himself on extended arms. Lower left: child straightens legs, hands still on floor. Lower right: hands "climb" up to

Childhood Obesity 2004 Linda Braucht (20th C. American) Computer graphics

A boy using binoculars