Environmentalism Today: What does it mean to be an environmentalist today? Has the environmental movement grown too accommodating with the passage of time? (first broadcast Friday, September 3, 2010)

Insomnia and Mortality: How important is sleep to your health? (first broadcast Friday, September 3, 2010)

Mental Exercise and Dementia: Can regular mental exercise help slow down the progress of dementia? (first broadcast Friday, September 3, 2010)

Video Pick of the Week: A Stocky Predator: We meet a newly discovered dinosaur that researchers describe as a 'stocky dragon' -- with claws that could pack a real punch. (first broadcast Friday, September 3, 2010)

Organic or Not?: Organic foods seem like they should be healthier -- but does the evidence support that idea? (first broadcast Friday, September 3, 2010)

Technology and the Brain: What can the way we interact with technology teach us about the way we interact with each other? (first broadcast Friday, September 3, 2010)

Storms and Coastal Erosion: New research gives coastal planners better insight into how major storms can rapidly reshape coastlines. (first broadcast Friday, September 10, 2010)

When to Test for Prostate Cancer?: 'Test early, test often' used to be standard procedure when it came to screening men of a certain age for prostate cancer. But is that the best approach? (first broadcast Friday, September 10, 2010)

Happy Birthday, Buckyballs!: Twenty-five years ago this month, researchers first identified buckminsterfullerenes -- chemical structures shaped like tiny carbon soccer balls. (first broadcast Friday, September 10, 2010)

Video Pick: Gotta Dance: New research tackles a difficult subject: what makes a man a good (or bad) dancer? (first broadcast Friday, September 10, 2010)

Malaria Update: New research tackles the question: why don't mosquitoes get malaria? (first broadcast Friday, September 10, 2010)

How To Rate Energy Star?: Many shoppers look for the Energy Star seal when choosing appliances. But is it time for the program to tighten its standards? (first broadcast Friday, September 10, 2010)

Swarms: How can fish, birds, or bees coordinate their behavior -- and how does that group behavior apply to humans? (first broadcast Friday, September 10, 2010)

Putting Care in Context: Doctors should work harder to establish 'context' for a patient's care, considering all factors that might affect the quality of care. (first broadcast Friday, September 17, 2010)

How We Pay Attention: What are the limits of human attention? Is the ability to pay attention to detail something that can be improved? (first broadcast Friday, September 17, 2010)

Progress through Challenges: We'll talk about encouraging ingenuity through contests and prizes -- and hear from the winner of the Progressive Automotive X Prize, a major prize awarded this week for advances in car efficiency. (first broadcast Friday, September 17, 2010)

Video Pick: Crows Use Tools Too: People use tools. Other primates use tools. But... crows? (first broadcast Friday, September 17, 2010)

No Return for Solar at 1600: Recently, Bill McKibben discussed an effort to return Carter-era solar panels to the White House. We'll get a report from him on his efforts. (first broadcast Friday, September 17, 2010)

Strange Physics: Dark Flow, Fine Structure Constant: We'll talk about the mind-boggling idea that stuff we can't see within our visible universe could be causing gravitational effects on visible matter. (first broadcast Friday, September 17, 2010)

Calculus Diaries: Sure, the math teacher said this stuff was important -- but why? (first broadcast Friday, September 17, 2010)

Science Diction: Cell: The human body contains more than 100 trillion cells, with an average size of 10 micrometers and mass of 1 nanogram. But how did the word 'cell' come to be? (first broadcast Friday, September 17, 2010)

Testing Relativity With Better Clocks: With a precise enough clock, it's possible to test the time-dilation effects predicted by Einstein's theory of relativity -- without a space ship. (first broadcast Friday, September 24, 2010)

Almost Chimpanzee: Rather than focusing on how similar humans are to chimpanzees, can more be learned by examining how we're different? (first broadcast Friday, September 24, 2010)

Looking at the Ethics of Personalized Medicine: One of the biggest promises offered by research into human genetics is the prospect of 'personalized medicine.' But is personalized necessarily good? (first broadcast Friday, September 24, 2010)

Drilling To Rescue Chilean Miners: We'll talk about the tools and techniques being used in efforts to rescue miners trapped in a Chilean gold and copper mine. (first broadcast Friday, September 24, 2010)

Forensic Art: How can forensic anthropologists and artists build a sculpture of a person's head based on just the skull? We'll talk about the science behind forensic art. (first broadcast Friday, September 24, 2010)

Video Pick of the Week: Composite Sketch: How do police artists get accurate depictions of a suspect, based on the hazy recollections of a handful of witnesses? Our video looks at the artistry -- and psychology -- of creating a good composite sketch. (first broadcast Friday, September 24, 2010)