As he continues to evade U.S. authorities, Edward Snowden joins a list of famous people who blew the whistle on private and government scandals. It is not yet known what kind of long-term impact Snowden's leak may have.
Mark Felt, a.k.a "Deep Throat"
Associate Director of the Federal Bureau of Investigtion until his retirement in 1973, Mark Felt gave Washington Post reporters Bob Woodward and Carl Bernstein information on what would become the Watergate burglary scandal. The scandal led to the resignation of President Richard Nixon.
Felt denied involvement until revealing himself as "Deep Throat," in 2005.
As Vice President of Corporate Development at the Enron Corporation, Sherron Watkins alerted her Enron superiors of accounting irregularities. Shareholders and employees lost billions in pensions and stock prices.
Watkins has been criticized for not making the irregularities known sooner, as it took five months for her initial report to reach the public.
In 1971, Daniel Ellsberg, a former United States military analyst, released the Pentagon Papers, a top-secret Pentagon study of the choices made by the U.S. government regarding the Vietnam War, to various national newspapers.
The leak revealed many secret government decisions, among them that four presidential administrations had misled the public about their intentions regarding Vietnam.
Jeffrey S. Wigand is a former employee at Brown and Williamson, who worked on the development of reduced-harm cigarettes.
Wigand appeared on 60 Minutes in 1996 and stated that his company had intentionally increased the amount of nicotine in cigarettes.
Wigand said he was harassed and received death threats affter his appearance on the program. He now works as a lecturer and consultant and was portrayed by Russell Crowe in the 1999 film The Insider.
Currently suspected of having shared classified material with WikiLeaks, Bradley Manning is an army soldier who was arrested in 2010.
Information was compiled from Whistleblowers.org, The New York TImes, The Washington Post, The Library of Congress and IMDB.com.
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Hospitals let patients schedule ER visits
Three times within a week, 34-year-old Michael Granillo went to the emergency room at Northridge Hospital Medical Center in Los Angeles because of intense back pain. Each time, Granillo, who didn't have insurance, stayed for less than an hour before leaving without being seen by a doctor.
Almost half of America's obese youth don't know they're obese
The good news is that after decades of furious growth, obesity rates finally seem to be leveling off in the U.S.. The bad news is that America's youth still appear to be dangerously unaware of the problem.
An oncologist uses scorpion venom to locate cancer cells
Olson, a pediatric oncologist and research scientist in Seattle, has developed a compound he calls Tumor Paint. When injected into a cancer patient, it seems to light up all the malignant cells so surgeons can easily locate and excise them.
We're raising a generation of timid kids
A week ago, a woman was charged with leaving her child in the car while she went into a store. Her 11-year-old child. This week, a woman was arrested for allowing her 9-year-old daughter to go to the park alone. Which raises just one question: America, what the heck is wrong with you?
Your chocolate addiction is only going to get more expensive
For nearly two years, cocoa prices have been on the rise. Finally, that's affecting the price you pay for a bar of chocolate - and there's reason to believe it's only the beginning.
Afghanistan vet who ran to grenade gets Medal of Honor
A former Marine Corps corporal who was severely wounded when he risked his life to shield a squad mate from a grenade blast in Afghanistan was awarded the nation's highest military decoration Thursday.
May 2014 was the hottest may in recorded history
According to new data released this week, May 2014 is officially the warmest May in recorded history.
Both NASA and the Japan Meteorological Agency have tentatively ranked May at the top of historical measurements, though NASA's numbers are preliminary because crucial information is still missing from China.
Bet the farm: 5 'psychic' animals predict soccer victories
Need some guidance on whom to place your bets for this year's World Cup? Since Paul the Octopus achieved a prediction success rate of 85 percent in 2010, hosts of animal oracles around the world have sought attention as soccer sages. Here's a look at a few of them.
Is the FDA waging a war on artisanal cheese?
Is the Food and Drug Administration waging a war on artisanal cheese?
The answer depends on your perspective. But this much is certain: The agency's answer to New York regulators about using wooden boards to age cheese has caused an uproar in the domestic industry and raised questions about the status of imported cheeses that use the same process.
Texting while driving is latest teen risk as smoking declines
While smoking among American teens has fallen to a 22-year low, most adolescents admit to engaging in a new type of risky behavior: texting while driving.
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