Expedition Explores The Arctic Sea Floor: A team of scientists is heading toward the Gakkel Ridge in the Arctic Ocean, hunting for hydrothermal vents on the Arctic sea floor. (first broadcast Friday, July 6, 2007)

Arctic Ponds Dry Up, Disappear: Some Arctic ponds are drying up -- despite evidence to suggest that those ponds have been wet for thousands of years. (first broadcast Friday, July 6, 2007)

New Biography Focuses On Einstein's Creativity: Why does Einstein, who died more than 50 years ago, continue to fascinate us? (first broadcast Friday, July 6, 2007)

Ancient Dna Offers Clues About Climate Change: What can ancient DNA can tell us about the effects of climate change? (first broadcast Friday, July 6, 2007)

Live Earth Concerts Kick Off Worldwide: Can music stop global warming? We'll talk with some of the organizers of the 'Live Earth' concerts scheduled for tomorrow across the globe. (first broadcast Friday, July 6, 2007)

25 Years Of Computer Viruses: We'll look back on twenty-five years of computer viruses. (first broadcast Friday, July 13, 2007)

In An Age Of Gadgets, Life Gets Complicated: How can complicated technology be designed with humans in mind? (first broadcast Friday, July 13, 2007)

The Relationship Between Politics And Science: Ira talks with author Chris Mooney about science and politics, in the wake of a shakeup at the National Hurricane Center. (first broadcast Friday, July 13, 2007)

Paper Or Plastic? Packaging Goes Green: If you trade in your paper and plastic bags and your bottles for biodegradable packaging, how eco-friendly will you really be? (first broadcast Friday, July 13, 2007)

Scientists Scour Genome For Clues About Disease: New technology in genetics has allowed researchers to sift through the human genome looking for possible genetic connections to all types of diseases. (first broadcast Friday, July 20, 2007)

Researchers Solve Checkers, Once And For All: Researchers report in the journal Science this week that after sorting through 500 billion billion possible moves, they've been able to create a computer program that will never lose a game of checkers. (first broadcast Friday, July 20, 2007)

Why It's Hard To Admit To Being Wrong: Do you have a hard time admitting you were wrong? Turns out it's really not your fault. (first broadcast Friday, July 20, 2007)

How To Pick The Perfect Peach: We'll look at finding the best produce and why picking a juicy peach can be a challenge. (first broadcast Friday, July 20, 2007)

NASA Plagued By Reports Of Intoxication, Sabotage: NASA is investigating pre-flight alcohol use among its astronaut corps. (first broadcast Friday, July 27, 2007)

Mars Rovers Battle Storms On The Red Planet: In this segment, guest host Joe Palca checks in on the Mars rovers, and gets a preview of the Mars Phoenix mission. (first broadcast Friday, July 27, 2007)

Drawing The Line Between Science And Politics: (first broadcast Friday, July 27, 2007)

The Future Of Fast-acting Depression Medication: Researchers think that studying the actions of ananaesthetic could lead to better, faster-acting antidepression medications. (first broadcast Friday, July 27, 2007)

Computer Program Yields Clues About Baby Talk: Researchers create a computer program that learns parts of language in a way similar to the way infants learn. (first broadcast Friday, July 27, 2007)

Protecting Privacy In A Web-searching World: A look at search engines--how they work and where they are headed. (first broadcast Friday, July 27, 2007)

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