Talk of the Nation

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.

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.