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Israeli Scientists Freeze Water By Warming It 165

ccktech writes "As reported by NPR and Chemistry world, the journal Science has a paper by David Ehre, Etay Lavert, Meir Lahav, and Igor Lubomirsky [note: abstract online; payment required to read the full paper] of Israel's Weizmann Institute, who have figured out a way to freeze pure water by warming it up. The trick is that pure water has different freezing points depending on the electrical charge of the surface it resides on. They found out that a negatively charged surface causes water to freeze at a lower temperature than a positively charged surface. By putting water on the pyroelectric material Lithium Tantalate, which has a negative charge when cooler but a positive change when warmer; water would remain a liquid down to -17 degrees C., and then freeze when the substrate and water were warmed up and the charge changed to positive, where water freezes at -7 degrees C."

NASA Finds Evidence of Recent Flowing Water on Mars 238

SonicSpike writes to mention that Scientists are claiming that they have evidence of water flowing on Mars within the last five years. From the article: "Subsurface aquifers or melting ground ice were floated as possible sources of the water. One of the springs even appears at a fault line, according to Malin, just as they often do on Earth. The shortness of the gulleys, which seem to flow for but a few hundred yards, might be accounted for by a process similar to a volcano's eruption on Earth, with water instead of magma building up underground, and ice, instead of fire, characterizing the resulting flow."

Hezbollah Hacked Israeli Military Radio 360

florescent_beige writes, "Newsday is reporting that Hezbollah was able to monitor secure Israeli military communications, perhaps using technology supplied by Iran, during the recent Lebanon war. A former Israeli general, speaking anonymously, called the results 'disastrous' for Israel. The story reports that an anonymous Lebanese source said that Hezbollah might have taken advantage of Israeli soldiers' mistakes in following secure radio procedures. The radio gear uses frequency hopping and encryption." The article identifies the Israeli communications equipment as the US-designed Single Channel Ground and Airborne Radio System.

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So... did you ever wonder, do garbagemen take showers before they go to work?