A Quake That Shook the World?: Last week's powerful earthquake in Chile may have shifted the Earth's axis and changed the length of a day. (first broadcast Friday, March 5, 2010)

From Thought To Movement: Researchers have recorded the brain signals responsible for movement outside the brain and used them to reconstruct hand movement in three dimensions. (first broadcast Friday, March 5, 2010)

An Older Proto-Dino: Researchers report finding fossil remains of a 'proto-dinosaur,' some 10 million years older than previously known. (first broadcast Friday, March 5, 2010)

Persuasion, Energy, and Behavior: When thinking about energy efficiency, how much emphasis should be put on human behavior rather than technology? (first broadcast Friday, March 5, 2010)

Nuclear Technologies: From small-scale nuclear power plants to advanced reactor designs, what's next for the technology of nuclear power? (first broadcast Friday, March 5, 2010)

About a Mountain: Ira talks with author John D'Agata about his book about the late Yucca Mountain nuclear waste storage facility. (first broadcast Friday, March 5, 2010)

Genetically Modified Crops: Has biotech delivered on its promise to feed the developing world? In this hour, live from St Louis, we'll talk about genetically engineered crops. (first broadcast Friday, March 12, 2010)

Cave Science: Ready to go spelunking? Live from the cave state--that's Missouri--we'll get an inside look at the biology, geology, and history of the underground attractions that gave the state its name. (first broadcast Friday, March 12, 2010)

Green Building: How can you make your building design greener? (first broadcast Friday, March 12, 2010)

Outstanding High-School Science: Plotting optimal paths for interplanetary spacecraft? We'll talk with a student who excelled in the Intel Science Talent Search, which concluded this week. (first broadcast Friday, March 19, 2010)

All Aboard the Electric Bikes: Spring is in the air, and thoughts turn to bicycles. How about an electric bike? (first broadcast Friday, March 19, 2010)

Bacterial Forensics: Can samples of the bacteria on a person's hands be enough to identify them? (first broadcast Friday, March 19, 2010)

The Future of 3D: Blockbuster films use 3D, and 3D televisions are entering the market. But where is the technology headed? (first broadcast Friday, March 19, 2010)

New Play Lays Lenin to Rest: A new play looks at two scientists charged, on Stalin's orders, with a serious task -- finding a way to preserve Lenin's corpse for posterity. (first broadcast Friday, March 19, 2010)

Chemistry Roundup: The environmental impact of eating less meat, BPA in seawater, and an update on cold fusion research -- we'll go behind the scenes at this week's American Chemical Society meeting. (first broadcast Friday, March 26, 2010)

Trade Talks on Endangered Species: An Iranian salamander gets international protection, but red coral and bluefin tuna are out in the cold, as negotiators debate rules for trade in endangered species at the CITES talks in Doha. (first broadcast Friday, March 26, 2010)

A New Human Relative, From a DNA Sample?: Genetic analysis of DNA from a single prehistoric finger bone may point to a new branch of the human family tree. (first broadcast Friday, March 26, 2010)

Asian Carp and the Supreme Court: How far should states go in trying to prevent Asian carp from colonizing the Great Lakes? (first broadcast Friday, March 26, 2010)

Tracking an Amphibious Caterpillar: Several newly-discovered species of caterpillar in Hawaii function equally well in water or on land. (first broadcast Friday, March 26, 2010)