Teen singer in viral video dies

Zach Sobiech, 18, passed away on Monday, surrounded by loved ones. His song, "Clouds," has more than 3 million views on YouTube. FULL STORY

TOP HEALTH STORIES

• Boys with ADHD may become obese adults | Watch  
• Cloning stem cells: What does it mean? | Cells cloned | Watch  
• Should tennis be worried about the 'kissing disease'?
• Flesh-eating bacteria victim uses bionic hands
• J.J. Watt surprises cancer patient  
• 'Lose weight or die' prompts 130-lb loss
• Triathlete conquers first time in the ocean
• Workers sickened by new virus | 5 things to know | Watch  
• Young boy to run seven marathons  
• Follow @CNNHealth on Twitter | Like us on Facebook