Uudenlaista jäätä on keksitty vahingossa.
The researchers squeezed a sample of water with a diamond anvil to a pressure of 17 gigapascals, about 170,000 times the normal atmospheric pressure at sea level. They then bombarded the water with high-energy x-rays. The molecules split, then reformed into a previously unknown combination of O2 and H2. The key to splitting the oxygen-hydrogen bonds was the strength of the x-rays. “We managed to hit on just the right level,” says team member Russell Hemley. Using a higher energy, he says, would have caused the x-rays to pass entirely through the sample. Any lower, however, and the diamonds in the pressure apparatus would have largely absorbed the radiation.
Top Doctors 2006: Who Wants to Live Forever? - Lisää CR-ruokavaliosta ja elämän pidentämisestä.
But before we get into any of the specific reasons why these mice are contenders for de Grey’s prize and are scientifically important, let me note that they’re really, really cute, these little guys, running around in their shoebox-size cages, sitting on their fingertip-size young, lapping at their giant water bottles. No Napoleonic complex here! You can make this kind of lame observation to Sell, and he’ll back you up: Turns out their lack of a specific growth hormone — what makes them small — has a fringe benefit of making them more docile, and friendlier, than usual.
CRON-O-Meter - Aaron Davidsonin ilmainen ohjelma CR-ruokavalion seuraamiseen. Sisältää yli 7000 ruokaa ja reseptieditorin.
One of my favorite people, Dr. David Katz, whom I saw speak at my 10th college reunion, gives a great talk about how modern Western folk are like polar bears in a dessert: we're not designed for our environment! Our bodies are made for the environment they lived in for most of human history, where food was scarce, populations were small, and people had to fight to stay fed and warm. We store food really, really well... that's how our genes got naturally selected above those of others of our ancestors who didn't make it through periodic food shortages so well.
- April's CR Diary