Science Friday (Free subscription) | 05/10/2008
In May 1983, the first scientific papers were published describing the possible connection between a retrovirus and the development of AIDS. The virus went on to become known as HIV. Experts discuss whether, 25 years later, scientists any closer to a cure for AIDS or to a vaccine to prevent HIV transmission.
Science Friday (Free subscription) | 05/10/2008
What made the Sahara Desert go dry — and are there ancient waters still hidden below the sands? In a controversial study published in the journal Science researchers argue that the drying of the Sahara took place over thousands of years — not suddenly as was previously thought.
Science Friday (Free subscription) | 05/10/2008
Introductory electronics classes focus on circuit diagrams involving combinations of resistors, capacitors and inductors. Now, researchers have discovered a fourth passive circuit element — one that fills in a gap in equations describing relationships between voltage, current and magnetic flux.
Science Friday (Free subscription) | 05/10/2008
Researchers report that atrazine, the second-most-applied weedkiller in the U.S., may be able to disrupt hormonal signaling in humans. The herbicide, which has been banned in Europe, is suspected of playing a role in sexual abnormalities in fish, frogs and other aquatic organisms.
Science Friday (Free subscription) | 05/10/2008
When it comes to greenhouse gas emissions, what you eat may be more important than where your food comes from. A new study finds that replacing red meat and dairy products with chicken, fish or vegetables could have the same impact as shifting to an entirely locally-grown diet.
Science Friday (Free subscription) | 05/10/2008
In February 2009, all full-power broadcast television stations in the U.S. will stop analog transmissions and begin broadcasting only in digital. Viewers who have cable or satellite are fine, but those who have older TVs receiving over-the-air signals may need to buy converters.
Scientific American (Free subscription) | 05/07/2008
Evolution Enclaves: Darwin the Botanist and Origins of Life Research
Science Friday (Free subscription) | 05/03/2008
Women living in America's poorest counties have seen their average life expectancy decline in recent years. New research shows that the gaps between the best-off and worst-off groups are widening — as much as 18 years between the two — in connection with smoking, high blood pressure and obesity.
Science Friday (Free subscription) | 05/03/2008
Researchers using a gene therapy technique to treat one form of congenital blindness have reported some success. Two teams of scientists have used modified viruses injected into the eye to partially restore vision to people who have Leber congenital amaurosis, an illness that results in the degradation of the retina.
Science Friday (Free subscription) | 05/03/2008
According to a new survey, even the people in the U.S. with the lowest energy usage have a carbon footprint about twice as high as the average global citizen. What changes can an American make to have a significant effect on emissions?
Science Friday (Free subscription) | 05/03/2008
What's really going on inside your head when you make a decision, make a mistake, or have a few drinks? Researchers are using fMRI techniques to monitor blood flow through the brain and are hoping to shed light on the mysterious inner workings of the human mind.
Science Friday (Free subscription) | 05/03/2008
Researchers report that growing cherry tomatoes in diluted seawater can make them tastier and richer in antioxidants. The findings could encourage the use of slightly brackish water in tomato agriculture, extending precious supplies of fresh water.
Nova Science Now (Free subscription) | 05/02/2008
Dr. Judah Folkman, a pioneer in the field of cancer research, passed away in January 2008. In this podcast, he describes how a high school chemistry teacher inspired him to think big, and make unlikely connections. Podcast produced by David Levin. Music by The New You. Judah Folkman audio courtesy Oberlin College. NOVA is produced by WGBH in Boston. Major funding for NOVA is provided by the Corporation...
Scientific American (Free subscription) | 04/30/2008
Plasma Physics: From Black Holes to Radio Reception
Science Friday (Free subscription) | 04/26/2008
Can't find anyone who wants to hang out this weekend? Help may be on the way. Inventors are working to develop robots that can interact with people on a deeper level: communicating, responding to emotion and operating under specific rules of social behavior.
