In three weeks, millions of Americans cast their vote for president in an election that both campaigns depict as a stark choice between two fundamentally different visions for the country. But the chief executive's power is limited in real ways, by Congress, foreign interests, and other players.
For older drivers and their families, the conversation about giving up the car keys can be wrenching. Driving, for many, means independence and the transition to life without a car can be challenging, particularly for those who live alone or in areas with limited access to public transportation.
This is SCIENCE FRIDAY. I'm Ira Flatow. Fifty years ago this week, a team of researchers at General Electric created something new: a solid-state device that could emit visible red light without getting hot like a light bulb. Other groups have made light-emitting devices, but this was the first practical one that could make light that a person could see, rather than invisible infrared light.
This is SCIENCE FRIDAY; I'm Ira Flatow. The 2012 Nobel Prizes were announced this week in Stockholm, and groundbreaking research on stem cells, cloning, cell receptors and quantum optics, yeah, claimed the honors this year. The physics prize was awarded to French physicist Serge Haroche and American David Wineland of the National Institute of Standards and Technology and the University of Colorado.