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Science Friday > Archives > 2000 > June > June 23, 2000: Hour One: Wireless Technology / Water on Mars? In the beginning, radio meant Morse code--simple pulses of sound. Then voice and music over the airwaves came along. Now the radio spectrum is being used for everything from cell phones to computer networking to this broadcast -- and new developments are on the way. Researchers are looking into a world of higher bandwidth and faster throughput. Others are working to make wireless communications devices ubiquitous, so that you and your electronic widgets are always connected and always in the know. Join us on this hour of Science Friday for a look at research into new wireless technologies. Plus, after several days of leaks, hints, and speculation, scientists announced findings that they say could be evidence of the presence of liquid water on the surface of Mars recently (geologically speaking, that means within the past million years.) The evidence consists of high-resolution photographic images taken from the Mars Global Surveyor spacecraft showing geologic features that the investigators say are similar to gullies found on Earth.
These Martian gullies are not pitted or scarred with craters, which mean that they are relatively young. In fact, the researchers said, they could not rule out the possibility that water flowed in these gullies as recently as last week. However, planetary geologists cautioned that there could be other explanations for the formation of these features, and said that it was hard to reconcile the presence of liquid water with the extremely cold Martian climate. The research will be published in next week's edition of the journal Science.We'll talk about the findings, and what they may mean.
Guests: Ted Darcie Ron Sperano John Mustard Related Links: Bluetooth Produced By: Charles Bergquist |
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