Talk of the Nation

The claims airline passengers make about flights are often embellished. During turbulence, for example, passengers may think a plane is dropping hundreds of feet, when it's never typically more than 20. Airline pilot Patrick Smith, writes the Ask The Pilot column for Salon.com. He sets the record straight on common air travel myths.

The 9th U.S. Circuit Court of Appeals declared California's same-sex marriage ban, known as Proposition 8, unconstitutional on Tuesday. This paves the way for a U.S. Supreme Court case that could have far-reaching implications for gay marriage around the country.

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LYNN NEARY, HOST:

Late last summer, Mary Elizabeth Williams got some devastating news: her cancer had returned. A year after recovering from malignant melanoma on her scalp, it had resurfaced, this time in her lungs and back. News can't get much worse than that, but then Williams learned that the FDA had recently approved clinical trials for first new melanoma drug in decades. She qualified for the trial several months ago and has been writing about her experiences for Salon. Mary Elizabeth Williams joins us in a moment.

After the 1994 genocide in Rwanda, world leaders vowed that such mass atrocities could never be allowed to happen again. In 2005, the U.N. adopted the Responsibility to Protect, a set of principles to guide the response of the international community if a government fails to protect its population.

The Susan G. Komen for the Cure Foundation reversed its controversial decision to stop providing funding to Planned Parenthood. Rodger Jones, an editorial writer for the Dallas Morning Star, says that to retain the support of abortion rights opponents, Komen needs to consider different fundraising options.

The jobs numbers at the start of 2012, shed a ray of positivity on a gloomy economic picture. Some economists warn against premature optimism. While the economy is creating jobs again, it will take years to return to full employment.

In 2006, thieves stole writer Patrick Symmes' bike in broad daylight on a crowded, New York City street. This inspired Symmes to set out to catch a bike thief — any bike thief.

He tells the tale of this revenge-fueled, cross-country journey in the Outside magazine piece "Who Pinched My Ride?" The story is filled with GPS trackers, police stake-outs and undercover stings.

In That's Disgusting: Unraveling the Mysteries of Repulsion, psychologist Rachel Herz discusses the origins of disgust — what she calls the 'instinct that's learned' — and why humans turn up their noses at smelly feet but devour expensive cheeses cultured with some of the very same stinky bacteria.

Amyloid plaques and tangles of protein in the brain are two of the key signs of the form of dementia known as Alzheimer's disease. In new work reported in the journal PLOS One, researchers tracked the spread of tangles of tau protein from neuron to neuron in the brains of mice. Study co-author Karen Duff of the Columbia University Medical Center discusses the findings.

NASA's iconic images of Earth from space date back to the late 1960s--with snapshots taken by Apollo astronauts. The modern "blue marble" images are captured by machines and they're not photos. They're datasets collected by instruments aboard satellites and then translated into imagery on the ground.