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More than 2 million US school students are using marijuana in electronic cigarettes, says latest survey on vaping
New analysis tries to find the link between social media use and teenage suicide
The Internet has a new meme: It's Alex from Target and no one knows why
Smartphone usage among US teens up sharply: survey
About 37 percent of Americans ages 12 to 17 tap the Internet using a smartphone, up sharply in just a year, according to a 2012 Pew survey released on Wednesday.
