Speaking multiple languages is like exercise for your brain, according to new research. Studies say it can improve multitasking and may even delay Alzheimer’s. The latest on the impact of bilingualism on the brain.
New color photos from the surface of Mars confirm the color of the "red planet," but more interesting to scientists is the data being captured by the Spirit rover. Diane and her guests talk about what’s being learned about Mars and the future of space exploration.
- Robert Craddock Geologist, National Air and Space Museum Center for Earth and Planetary Studies
- Jim Garvin NASA's lead scientist for Mars exploration
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