© Teenage friends (14-15, 16-17) using digital tablet in backyard

© Teenagers (16-17) studying at home

© USA, Illinois, Chicago, Girlfriends (14-15, 16-17) looking at smart phone

© USA, New Jersey , Teenage girl (16-17) taking selfie with smart phone on beach

© Team of volleyball players (14-15, 16-17) in sports hall

© Mother with son and daughter (16-17) on porch

© USA, Minnesota, Minneapolis, Girl sitting in recording studio

© Father with son (16-17) and three friends jumping from cliff into lake

© Teenage girl (16-17) in wet t-shirt lying on beach

© Teenage girl smelling wildflower

© USA, New York State, Adirondacks, Teenage girl (16-17) with young man camping in woods

© USA, New York State, Adirondacks, Teenage friends (16-17) unloading camping equipment from car

© USA, New York, New York City, People sitting on bench talking

© Portrait of smiling female graduate students (16-17)

© USA, Massachusetts, Cape Cod, Teenager driving car

© USA, Colorado, Man and teenager (16-17) horse racing on Dirt track in Colorado

© USA, Colorado, Teenager (16-17) running trough field at sunset

© Teenage girl (16-17) relaxing on beach

© Portrait of teenage girl (16-17) walking on beach

© Teenage girls (16-17) using laptop on bed and laughing

© USA, New Jersey , Teenage girl (16-17) using tablet in back seat of car

© Teenage girl (16-17) using laptop on bed

© USA, New Jersey , Teenage girl (16-17) raising toast with her friends on beach

© USA, Oregon, Female runner (16-17) taking break on bench

© USA, New York State, Adirondacks, Teen friends (16-17) walking together in forest