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Last May, German investigators found secret files embedded in a pornographic video on memory cards being carried by a suspected al Qaeda operative. Peter Wayner describes the history and technology of the technique for hiding information, known as steganography.

Airs Thursday, July 17, 2014 at 11 p.m. on KPBS TV

Philippe Falardeau weaves issues of social taboos and authority in his Oscar-nominated film Monsieur Lazhar. Falardeau's films blend comedy and tragedy in a way that can ruffle audiences, and Lazhar is no exception.

Many have long turned to religion for solace in the aftermath of a tragedy, but that's not an option for the nonreligious or those whose faith is destroyed by the event. For the nonreligious, dealing with trauma and loss often requires forging one's own path.

The Mile High Gliding facility at the Boulder Airport in Colorado is one of Carol Fiore's favorite haunts. And it's a perfect day for flying: clear, breezy and with a gorgeous view of the Rocky Mountains.

After performing Albert Einstein's autopsy, the pathologist put the brain in a jar of formaldehyde and made off with it. That single act torpedoed his reputation, but years later it helped researchers learn more about how our minds work. It turns out that Einstein's brain had more of certain key cells, which were previously thought to be unimportant.

Supporters of the product say they help quit smoking. Opponents maintain it's a gateway to cigarettes. Both groups are making their case to the Food and Drug Administration, which is studying the flavored melt-in-your-mouth products.

California’s ambitious $24 billion plan for ending the state’s water wars was unveiled Wednesday, but standing in its way are unanswered questions and hurdles that will take years to surmount — if that’s even possible.

With the space crafts retiring to museums - including one in Los Angeles - it will be another three to five years at best before Americans are launched again from the U.S.

Proposition 37 is attracting national attention because of the message it could send about our food. The measure would make California the first state in the U.S. to require labeling for genetically modified food.