Several newly-discovered species of caterpillar in Hawaii function equally well in water or on land.

X-ray technology revealed an illustration underneath N.C. Wyeth's painting 'Family Portrait.

We'll talk with chemist Harry Kroto about his discovery of buckyballs in the 1980s, and about new nano applications today, such as buckypaper.

Last Friday, the Food and Drug Administration announced that it was seeking further information about the potential health effects of bisphenol-A, a common ingredient in some plastics.

An audio lecture exploring how a powerful earthquake in Chile may have shifted the Earth's axis and changed the length of a day. [12:02]

Researchers have recorded the brain signals responsible for movement outside the brain and used them to reconstruct hand movement in three dimensions.

Researchers report finding fossil remains of a 'proto-dinosaur,' some 10 million years older than previously known. Learn about the closest known relative to the dinosaur in this audio lecture. [12:55]

When thinking about energy efficiency, how much emphasis should be put on human behavior rather than technology?

From small-scale nuclear power plants to advanced reactor designs, what's next for the technology of nuclear power?

Ira talks with the composer, the director, and the lead of the opera 'Dr. Atomic,' taking the stage this week at New York's Metropolitan Opera.

Experts outline the basics of radiation terminology.

The challenge: find the geographic coordinates of 10 red weather balloons scattered across the country, as quickly as possible. We'll talk with the winner of the DARPA-sponsored contest.

Researchers report a non-invasive, drug-free technique to erase a bad memory in the human brain. [12 mins. 38 secs.]

New research looks at the effects of climate change on Arctic species.

In an anniversary year look back into the Science Friday archives, we bring you a clip from our first show, on the problem of the ozone hole.

This week, a federal district court judge blocked President Obama's executive order dealing with federal financing for embryonic stem cell research. We'll talk about the ruling and what it means for researchers.

We'll get the latest on solar and wind power projects in the US. What can be learned from the European renewable energy industry?

How do filmmakers create the visions of technology that fill science fiction films?

What goes on in the nose and brain when we smell a smell?

Biologist Rob Dunn explains how the organisms that share our world have shaped us. [17 mins. 39]

Scientists have created an iron-containing soap that can be removed from solution with a magnet.

Ira Flatow and guests discuss whether boxing in the Mississippi is a sustainable long-term solution.

Dr. Ralph Hoffman discusses how he made computers recall stories as a schizophrenic patient would.

Even if cheap pyrotechnics isn't your thing, the physics behind how this works is relevant to anyone with eyes.