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The year is 1984: A Soviet defector dashes across the Korean border -- chased by North Korean troops. American troops shield him and open fire on the North Koreans. There are dead and wounded on both sides.

The FAA has granted 1,300 permits that allow commercial firms to operate drones for everything from selling real estate to inspecting utility lines. But there's concern over some recent close calls.

Part 6 of the TED Radio Hour episodePredicting The Future.

Over the past few months, the country's biggest technology firms have spent billions buying startups like WhatsApp and Nest. That has analysts wondering if another tech bubble is about to burst.

Tim West's grandpa was an executive for Frito Lay, and the 30-year-old entrepreneur grew up on junk food. But he now wants to shake up the food system with healthy, sustainable eats.

Even as investment in education technology grows, teachers say free tools are just as effective as paid ones.

Legislation aimed at getting the first driverless vehicles on the road in California was signed into law Tuesday. Governor Jerry Brown signed the bill at Google headquarters in Mountain View.

Driverless cars are coming to California. But before they get here the state must make sure they’re safe.

Airs Saturday, May 23, 2015 at 2 p.m. on KPBS TV

Cartoonist Bill Griffith discovered as an adult that his mother had had a 16-year affair with another man, also a cartoonist. In Invisible Ink, he digs into the secrets surrounding his family.