Michael J. Fox Seeks New Cure for Parkinson's

Actor says dopamine could hold the key for treating the disease.

Imported Shrimp Tested for Chemicals

ABC News' Jim Avila sends overseas shrimp for testing.

Facebook Stock: How Did Wall Street Respond?

CEO Mark Zuckerberg rang the opening to signal the start of trading.

Facebook IPO Turns Employees Into Millionaires

Facebook employees on how they will spend their money.

Obama Hosts Camp David Retreat on Europe

President brings together world leaders to discuss European economic crisis.

Arizona Wildfires: State of Emergency

Rising temperatures could spark more wildfire outbreaks.

Trayvon Martin Shooting Video: New Evidence

New records include eyewitness testimony of struggle with George Zimmerman.

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Latest headlines from ABC News

Mary Richardson Kennedy Dead: Suicide

Wife of Robert Kennedy Jr. hanged herself outside home.

Trayvon Martin Shooting Video, Photos Released

New evidence, including Trayvon Martin's autopsy, in George Zimmerman case.

Donna Summer Dead: From Gospel to Disco

Queen of Disco once said she wanted her voice to sound like Marilyn Monroe's.

Facebook IPO: Is FB Stock the Next Apple?

Investors weigh the hype against the price of shares.

Arizona Wildfires: Abandoned Mines Pose Threat

Firefighters navigate tough terrain filled with potential death traps.

'Z-Pack' Antibiotic Sudden Death Risk

Common treatment for sore throats and sinus infections linked to heart risk.

Donna Summer Playlist: The Hits

The Queen of Disco talks about the inspiration behind her most famous songs.

Skechers Pays Up in Fitness Shoe Settlement

Shoe company settles after allegations of false advertising.

Flesh-Eating Bacteria Strikes Second Victim

Another woman diagnosed while Georgia grad student continues to fight disease.

Dog Learns Sign Language

Scientist trains pet, monitors brain activity.

John Edwards Trial: Defense Rests

Case will go to the jury without testimony from Rielle Hunter or Cate Edwards.

Arizona Wildfires Triple in Size in 24 Hours

Firefighters battle high winds, dry air and snakes on the ground.

Autism Detection in Infants?

Experts suggest signs appear in children as young as 6 months.

Robert Kennedy Jr.'s Wife Dead

Famous American family endures yet another tragic death.

Autism Research: Head Lag Test

What does the pull-to-sit test in babies reveal about autism?

Trayvon Martin Case Exclusive: Zimmerman Medical Report

Report shows George Zimmerman's condition after incident with unarmed teen.

John Edwards Trial: Daughter Cate to Testify

Cate Edwards to take the stand in her father's defense.

Alzheimer's Cure by 2025?

Doctors announce deadline to find treatment for the disease.

'Made in America' Products Selling in China

U.S. entrepreneurs capitalize on winning formula for marketing to the world.

Police Imposter Kills 2 in Mississippi

Authorities believe person dressed as a cop pulled over victims' cars.

Randy Pausch's Last Lecture: Wife's Take

Professor's wife writes book about caring for dying husband.

Newark Airport Security Breach Caught on Tape

TSA report finds poor handling of security breaches at airport.

Texting and Walking Accidents: Video

Distracted pedestrians lead to law enforcement crackdowns.

Arizona Wildfires: Risks Across the Country

Combination of high temperatures and dry conditions raises fire risk.

'Modern Family' Actress to Get Kidney Transplant

Sarah Hyland opens up about pain and exhaustion from kidney disease.

JPMorgan Chase Fallout Effect on Taxpayers

Bank's $2 billion trading loss; Congress talking oversight.

Obama on 'The View': Barbara Walters' Preview

President answers questions about JP Morgan Chase and gay marriage.

New Jersey Town Bans Texting and Walking

Fort Lee government issues 85 fine for "dangerous" walkers.

Mother's Day: How Do Kids Show Their Love?

Women across the country are celebrated by their loved ones.

American Drones Strike Al Qaeda Targets in Yemen

Counter-terrorism measures kill 18 militants in four separate strikes.

JP Morgan Chase to Fire Executives

Bank looks to calm fears after recent 2 billion loss.

Obama: 'The First Gay President'

Same-sex marriage continues to be a talking point around the 2012 election.

John Edwards Trial: Defense Starts Its Case

Former presidential candidate's lawyers get ready to argue his case.

Olympic Security Lockdown: Super Sonic Weapons

Long-range beam of sound will be used to protect athletic competition.

Loans Burden 94 Percent of 2012 Students

Most recent graduates will deal with major debt repayment.

Columbia University Janitor Picks Up Degree

Yugoslavian man works for nearly 20 years to achieve his dream in the U.S.

Is Successful Risk Taking Good For the Economy?

Author argues that innovation from successful risk taking makes life better.

Mitt Romney Addresses Liberty University

Republican candidate uses commencement speech to cement gay marriage position.

America's Attitude Towards Gay Marriage Changing?

Advertisements reflect new attitudes and start targeting same-sex couples.

JP Morgan Chase's 2 Billion Loss

Bank's announcement of huge losses roils financial markets.

Boston University Students Killed in NZ Crash

Car crash takes the lives of teens on vacation in Taupo New Zealand.

Jennifer Hudson's Brother-in-law Convicted

Jury renders guilty verdict in Hudson family murder trial.

American Airline Still Pays for Decades-Old Offer

Airline sold "unlimited tickets" 25 years ago, and travelers still use them.

Royal Family Shows Sillier Side

British Royals loosen their image and crack some jokes.

Missing Girls Found Alive; Kidnapper Dead

Police track girls who were held captive in the Mississippi woods.

John Edwards Trial: Rielle Hunter to Testify?

Former presidential candidate's defense team's witnesses to take the stand.

Facebook Co-Founder Renounces U.S. Citizenship

Eduardo Saverin, who owns 4 percent of Facebook, becomes resident of Singapore.

1-800-Get-Thin Under Fire After Deaths

Beverly Hills brothers have made millions from weight loss business.

Mitt Romney Bully Controversy

GOP candidate's alleged bullying of another student in high school resurfaces.

'Time' Cover of Breastfeeding: Mom Threatened

Woman breastfeeding her almost 4-year-old son stirs criticism.

Mom Entrepreneurs Give Jobs Boost

Small business ideas with products "Made in America" that help create jobs.

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American Oil Exports Could Create Jobs

Experts say an energy boom could create 3.6 million new jobs by 2020.

Mitt Romney Can't Recall Bullying Gay Classmate

Republican candidate apologies for participating in high school pranks.

Al Qaeda Mole Foils Most Recent Bomb Plot

Double agent, recruited by British intelligence, reveals terrorist plans.

John Edwards Trial: The Prosecution Rests

Details revealed about how much Elizabeth Edwards knew about the affair.

Watchdog Shines Light on Osteoporosis Drugs

Officials clear up how long patients should be on bone medications.

Prince Charles' Weather Report on BBC

The British royal surprises viewers with guest appearance as meteorologist.

Obama's Gay Marriage Stance Drives Donations

President sees increased fundraising after endorsing same-sex marriage.

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Latest headlines from ABC News

X-Ray Radiation Concerns for Kids

FDA calls for change to children's exposure to radiation from scans.

Columbia University Janitor Graduates With Honors

Gac Filipaj fled from Yugoslavia to become real-life "Good Will Hunting."

Obama Supports Gay Marriage: Did Biden Force Issue

President's shifting stance on same-sex marriage follows VP's endorsement.

Obama's Gay Marriage Support Reflects Nation

Polls show more Americans favor same-sex marriage.

America Hunts Al Qaeda Bombmaker

Ibrahim al-Asiri believed to be mastermind of several twisted bomb plots.

John Edwards Trial: Elizabeth Edwards 'Upset'

Friend of presidential candidate's wife testifies about days before her death.

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The latest ABC News headlines.

President Obama Affirms Support for Gay Marriage: ABC News Exclusive

Obama tells Robin Roberts, "I think gay couples should be able to get married."

Housing Ideas to Help Create Jobs

"Made in America" house-building movement spreads.

Double Agent Infiltrated Al Qaeda

Mole posed as suicide bomber, disrupted bomb plot against US-bound planes.

Is Your Commute Making You Fat?

Doctors find negative health impacts from long commutes to work.

'Where the Wild Things Are' Author Dead

Maurice Sendak celebrated for his children's books.

Airport Bomb Scanners Neglected in Storage

TSA keeping hundreds of unused bomb detection systems in a Dallas warehouse.

John Edwards Trial: Witness on Secret Funds

Wendy Button says Edwards admitted to supporting his child with Rielle Hunter.

New Al Qaeda Bomb Plot Foiled

Planned for Osama anniversary, but bomber caught before boarding US-bound plane.

'Austerity' Revolt in Europe: Effect in U.S.?

Wall Street and Main Street concerned about European governments' deficits.

Duck Boat Trial Opens After 2 Deaths

Two sightseers died in Philadelphia when a barge hit a tour boat.

'Avengers' Dominates Box Office

Comic book heroes win over audiences and their wallets.

Domino's to Make Gluten-Free Pizza

Pizza chain will offer option for customers who avoid wheat.

May 7, 1947: AMA Founded

American Medical Association established on this day in history.

Made in America Underwear

Flint and Tinder's goal is to make premium men's underwear in the United States.

'The Avengers' Smashes Box Office Records

Marvel superhero movie raked in more than $200 million in its opening weekend.

Joe Biden's Bold Words on Gay Marriage

The vice president made it very clear that he has no problems with gay marriage.

Economic Upsets in Europe

French President Sarkozy loses election; Greek austerity plan in jeopardy.

Obama Takes Aim at Romney

The president has called out his opponent and team Romney is firing back.

Super Shots of the Supermoon

People all over the country snapped photos of the astounding lunar event.

Hope Dwindles for Missing Mother and Girls

The FBI has uncovered two bodies but will not reveal their identities.

Outrage at 9/11 Terror Trial

A terrorist's gesture triggered fury from American families watching.

Associated Press Apologizes to WWII Reporter

Edward Kennedy was fired for breaking the end of the war against military orders

Bringing America Back: Working on the Railroad

The railroad industry is on the mend and looking for new employees.

9/11 Defendants Remain Defiant

The defendants refused to participate in their own trial at Guantanamo Bay.

Search Intensifies for Missing Tennessee Mother

The FBI believe Jo Anne Bain and her three daughters are in extreme danger.