Why This Teen Can't Stop Eating: Life With Prader-Willi Syndrome
Every waking minute of Hannah Wilkinson’s day is filled with intense hunger.
Strange Condition Turns Men's Guts into Microbreweries
Auto-brewery syndrome made these men appear to be drunk without ever drinking.
The Dark Side of Taking the Perfect Selfie
One teenager almost lost his life over his selfie obsession.
Teens Don't Let Blindness Keep Them From Golf, Skateboard
Leber's Hereditary Optic Neuropathy affects one in 50,000, many male teens.
On the Quest for Silence: When Everyday Sounds Hurt
Having hyperacusis makes hearing everyday noises unbearable for Joyce and Ben.
Robin Williams Died in an Apparent Suicide by Hanging
The actor was found dead in his home with "superficial cuts" on his wrist.
Robin Williams' Kids: Why He Couldn't 'Find It In His Heart to Stay'?
The late actor's 3 children speak out after their father's death.
Why Chris Rock Thought Robin Williams Was 'From Another World'
Williams was the first person Rock ever saw "being as funny as Bugs Bunny."
Jeff Bridges Recalls Robin Williams Running Naked in Central Park
Other co-stars reflect on working with the comedic legend.
What's to Come of the Films Robin Williams Was Working On?
What happens to the sequel of "Mrs. Doubtfire"?
Robin Williams Was the Bob Hope of His Generation
Comedian made the troops laugh, again and again.
Inside Robin Williams' Troubled Life
The actor battled substance abuse and most recently, depression.
Atlantic City Vacationers Describe Being Roughed Up by Harrah's Security
Hotel guests file series of lawsuits against Harrah’s Resort over use of force.
Atlantic City Vacationers Told ABC News “20/20� They Were Roughed Up by Harrah's Security
Atlantic City Vacationers Told ABC News They Were Assaulted by Harrah's Security
Hot Debate: Is It Ever OK to Leave Your Child in the Car?
Recent deaths of children left alone in hot cars re-ignites parenting debate.
Brain-Eating Amoeba Survivor Swims Again
Kali Hardig's one of three people in the United States to survive the infection.
5 Ways to Avoid Getting Sick From the Beach's Invisible Dangers
Sharks aren't the only threats you have to keep away from in the water.
NJ Police Reopen Decades-Old Missing Baby Cold Case
Melissa McGuinn was just a few months old when she vanished in 1988.
Inside Robin Roberts' Courageous Fight Against MDS
A personal and candid look at the "GMA" anchor's brave journey.
Resource Guide: Children in Foster Care
Find out more about child welfare organizations.
Former Navy SEAL's Guide to Surviving Almost Anything
Cade Courtley, a former Navy SEAL, on how to prepare yourself for disaster.
20 Ways to Cut Wedding Costs
The wedding industry is a $30 billion giant; don't pay more than you have to.
Butt Glue? 20 Beauty Secrets From Miss America Contestants
Beauty, fitness and eating tips from some of those vying for the 2013 tiara.
Billionaires' 20 Keys to Success
20 From '20/20': Principles That Made Tony Hsieh and Guy LaLiberte rich.
Elizabeth Vargas
Vargas Is the Co-anchor of '20/20' on ABC News
David Muir
Weekend Anchor, "World News with David Muir" Co-Anchor, "20/20"
Pooped Ex-Mayor Says Why He Tossed Dog Feces
Dennis Kneier was caught throwing a bag of dog poop onto a neighbor's walkway.
Anger Over Prison Release for Man Who Bulldozed Neighborhood
Barry Swegle damaged 4 houses, a truck and several power lines with a bulldozer.
Why Has This Man Been Honked at Over 5,000 Times?
Rick and Cindy Krlich told “20/20" their Ohio town turned against them.
Hand Rejuvenation for Better Engagement Ring Selfies
This woman got a cosmetic procedure on her hand to become more "selfie worthy."
When Your Daughter Can't Stop Eating
Mother describes what it's like raising a child with Prader-Willi syndrome.
A Day in NYC When Every Sound Is Painful
Living in New York City can be a challenge when everyday noises can cause pain.
Woman 'Very Nervous' Since Being Grazed by Lightning in Living Room
"All I remember is the sound," Theresa Szelest said.
Investigation: Hotel Security and Violent Takedowns
ABC News investigates allegations of abuse by security in Atlantic City.
Lightning Safety Tips For Protecting Yourself
John Jensenius, a lightning safety specialist for the National Weather Service, offered this advice for staying safe when...
Rare Condition Makes Kids Intensely Hungry 24/7
Hannah Wilkinson suffers from Prader-Willi syndrome, which can cause an insatiable appetite.
The Selfie Addiction: From Surgery to Obsession
Some people are going to extreme lengths for the perfect selfie, including having cosmetic procedures.
These Men Can Get Drunk Without Drinking
Auto-Brewery syndrome turned Nick Hess' stomach into a brewery, which converted excess yeast to alcohol.
Everyday Noises Cause Pain to Wife, Husband Living in N.Y.
Writer Joyce Cohen and her husband Ben suffer from hyperacusis, which can causes ear pain.
Men Thrive In Sports Despite Sudden Blindness
Jeremy Poincenot and Brett Devloo have Leber's hereditary optic neuropathy, causing blindness.
Mom Must Lock Refrigerator for Constantly Hungry Daughter
Tonya Wilkinson's daughter Hannah Wilkinson suffers from Prader-Willi syndrome, which affects her appetite.
This Man Appears Drunk, But Hasn't Been Drinking
Nick Hess was at home with his wife when he became confused and slurred his words due to a mysterious illness.
Man Drives Bulldozer Through Neighbor's House
In cell phone video given exclusively to "20/20," a neighborly feud gets out of hand.
20/20 5/2: Donald Sterling's Confidante V.Stiviano Speaks Out
V. Stiviano speaks exclusively to Barbara Walters and 20/20.
20/20 10/04: Out of Bounds
Girl Crush Becomes a Crime, Police Speeding, Alleged Kindergarten Fighting
20/20 12/2: Overmedication in Foster Care
An investigation into the use of mind-altering drugs on foster children.
Remembering the Life and Career of Robin Williams
A photo tribute to the life of a comedy legend.
Robin Williams' Best Roles
The Oscar-winner appeared in more than 80 films.