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A physicist's photographs show snowflakes in a dazzling variety of shapes — from minimalist cylinders and spiky rods to stylized Art Deco and the familiar lacy Baroque.

Airs Wednesday, April 28, 2010 at 8 p.m. on KPBS TV

One of the biggest actresses of MGM's Golden Age, also lived a quiet life as an inventor. During World War II, Hedy Lamarr invented a form of wireless communication that led to Bluetooth, GPS and more.

In just a few months, the movement started a national conversation about inequality. With the end of many encampments, the movement is entering a new phase. Some say this dynamism will ensure success. Others think the movement will fail without political partners and compromise.

The controversies that divide us — the political, the social and of late, even the Girl Scouts — just keep on coming. Sometimes it's enough to make you wonder how we'll ever resolve our differences. But to do that, conflict mediators say, we must first identify the conflict.

The head of the AFL-CIO has called on President Obama to take bolder action on the economy. The president's speech next week on getting Americans back to work may be critical for determining the loyalty on Election Day of one of the strongest sources of money and organizing power for Democrats.

2011 is here and the music and arts scene in San Diego is off to a strong start. We'll talk with two writers for San Diego CityBeat about what they recommend for your weekend itinerary.

Since 2001, more than 1.9 million sons and daughters have been deployed to fight in Iraq and Afghanistan. For many young veterans, homecoming can be a time of mixed emotions and changing family dynamics after a life-changing experience at war.

Back in 1962, the U.S. blew up a hydrogen bomb, creating what might be the greatest fireworks spectacular ever. People in Hawaii gathered on rooftops, sipping drinks, as they watched a radioactive rainbow display in the night sky.

Researchers were able to alter people's perceptions of right and wrong by applying magnetic stimulation to the brain. The new study is part of a larger effort by scientists to provide a mechanical explanation for how the brain makes moral judgments.