Transgenic Prairie Voles: Zoe Donaldson, Yerkes National Primate Research Center, via Science Daily
Man, those scientists just love their glowing lab subjects. First came mice, and then recently the first primates got some jellyfish genes implanted into their DNA. Now, scientists at Emory University have implanted the gene for jellyfish fluorescent protein in prairie voles.
By Gregory MonePosted 10.25.2007 at 10:31 am6 Comments
This little party trick is guaranteed to impress, and you don't need any special materials, just a decent freezer and a bottle of beer. Emory University physicist Sidney Perkowitz, the author of the forthcoming book Hollywood Science, says the phenomenon at work here is most likely supercooling - a process by which water can remain in a liquid state below its freezing point. It's a delicate balance, though, as the water will turn to ice given the slightest shock.
If supercooling is the culprit, the hidden scientist in this video most likely left the bottle in the freezer long enough for it to drop down below the freezing point - some other sites recommend about 30 minutes. Next, the shock of slamming the bottle on the table jolts the beer, and this added energy forces it to crystallize into ice.
Of course, it's hard to say for sure what's happening in this clip, and the many other frozen beer related videos posted on YouTube, because we don't have all the information. The best way to test the idea would be to try it yourself. I'd do the same, but I don't believe in waste.—Gregory Mone
Medicine and sociology: More bad news about mama's butts.
By Gunjan Sinha
Posted 04.11.2002 at 4:36 pm 0 Comments
Everyone knows that expectant moms who smoke risk damaging their babies' physical health. New evidence from a Danish study shows that smoking can also harm babies emotionally. Patricia Brennan of Atlanta's Emory University has found that the more cigarettes a woman smokes in the third trimester of pregnancy, the more likely her children are to be arrested for a crime or hospitalized for substance abuse.
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