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After teens noticed a change in the tap water in Oakland due to the California drought, 17-year-old Amber Lee took a tap vs. bottled water taste test in Youth Radio's studios. Jenny Bolario/Youth Radio hide caption

Comedian Aziz Ansari became a pioneer of emoji language use in 2011, when he transcribed the hit Jay-Z and Kanye West song, "Ni**as In Paris." azizisbored.tumblr.com hide caption

Apps like Venmo promise easy, carefree money transfers between friends. Noah Nelson/Youth Radio hide caption

Truvada can dramatically reduce the risk of HIV infection when taken as a preventative medicine — if taken every day. Studies are underway to determine if young people are likely to take the pill consistently. Justin Sullivan/Getty Images hide caption

Eight-year-old Tomás Rocha, a third grader at Malcolm X Elementary School in Berkeley, Calif., is among a handful of gender non-conforming students at the school. Brett Myers/Youth Radio hide caption

Tyfanni Edwards and Dominique Bell, both 19, have part time jobs and also attend Berkeley City College part time. Brett Myers/Youth Radio hide caption

Emily Neblett, a patient at the Monroe Carell Jr. Children's Hospital in Nashville, Tenn., demonstrates circuit pieces from the mobile maker space that are connected by magnets. Noah Nelson/Youth Radio hide caption

Trimmers prepare the marijuana flower, or bud, to make it more appealing to consumers. They use scissors to snip off the leaves and stems. Brett Myers/Youth Radio hide caption