Why Does Social Media Help Us Mourn?

b_250_0_16777215_00_images_obgrabber_2014-08_4a46ef3861.jpgiStock Editorial/Thinkstock (NEW YORK) -- It was as though millions of people personally knew Robin Williams. Tributes to the actor poured in on Facebook and Twitter from many people who never had the pleasure of meeting him but felt like they had through his work. The advent of social media has created a new way for people to come together and grieve, Dr. Pamela Rutledge, director of the Media Psychology Research Center, told ABC News.

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Anatomy of a Shark Bite: How Doctors Tackle Gruesome Wounds

b_250_0_16777215_00_images_obgrabber_2014-08_fb5cd16c7f.jpgCourtesy of Health First (NEW YORK) -- Amy Tatsch was boogie boarding off the coast of Florida less than three months ago when she felt something bump her right leg. Hard. Just as it registered that there was a shark in the waist-deep water with her, she felt razor-sharp teeth rip away half of her calf.

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The Flipside of a Funny Bone Can Be a Troubled Psyche

b_250_0_16777215_00_images_obgrabber_2014-08_cdacdc0af5.jpgiStock/Thinkstock (NEW YORK) -- Robin Williams' apparent suicide has put a spotlight on the dark side of comedy. Williams, like many comedians, lived with long-term depression and addiction. Experts say these mental illnesses are no laughing matter.

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WHO Says Use of Experimental Ebola Interventions Is Ethical

b_250_0_16777215_00_images_obgrabber_2014-08_0ac210ea23.jpgHemera/Thinkstock (GENEVA) -- The World Health Organization has given the green light for the use of experimental Ebola treatments to combat the deadly virus or prevent it from spreading. "It is ethical to offer unregistered interventions as potential treatments or prevention," WHO Assistant Director General Dr. Marie-Paule Kieny said.

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Once a Cheater, Probably Always a Cheater

b_250_0_16777215_00_images_obgrabber_2014-08_2dfbdf0065.jpgiStock/Thinkstock (DENVER) -- Cheating in a relationship happens. That's just a fact of life. But if you're the one who's been betrayed and are more than willing to forgive and forget, you may want to rethink your decision. Kayla Knopp, a graduate student at the University of Denver, says that people who cheat are likely to do it over and over again.

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