What's going on with the transition to digital television -- and will you need to adjust your sets?

NASA plans to launch an orbiting satellite observatory to map the carbon dioxide in the Earth's atmosphere.

Last week, two satellites collided in orbit around Earth. We'll check in on the after-effects of that collision, and talk about what the lingering debris from the crash means for future space missions.

Are you a late merger? You might be on to something. Ira speaks with Tom Vanderbilt, author of 'Traffic: Why We Drive the Way We Do (and What It Says About Us)' about the psychology and engineering found where the rubber meets the road.

Do you have a hard time admitting you were wrong? Turns out it's really not your fault.

New research indicates that in situations in which a person is not in control, they're more likely to spot patterns where none exist, see illusions, and believe in conspiracy theories. We'll talk about the finding and what it means.

Smile, smile, smile. Happiness may be catching.

Ever come home from a shopping trip with a few things you hadn't planned on buying? We'll talk about some of the psychological tricks stores use to influence your shopping.

A scientist describes finding a genetic clue to Attention Deficit Hyperactivity Disorder, or ADHD, and what this could mean for treating this condition. Aired Jul. 11, 2008 [9:22 min]

Can new forms of seismic monitoring be used to predict earthquakes?

Soil may be good for growing things in -- but it's also an important player in climate change. We'll talk with a soil scientist about the importance of fertile soil to the planet's environmental health.

New research indicates that chili pepper plants may have developed their signature heat as a way to fight off fungal infections caused by insects.

Ira talks with author Michael Pollan about what the next president needs to know about food and agriculture. [21 mins. 14]

How do the smell and taste of food affect your mood during a holiday? Learn about the psychology behind these two senses. Aired Nov. 26, 2010 [7:57]

In some people, a fruit and vegetable filled diet can lower heart attack risk.

How do museums protect and preserve artistic and historic artifacts for the ages? We'll talk with the director of the Getty Conservation Institute about the fine art of art preservation.