Friday, April 22, 2005
	10:04:17 PM   Scientists figure out how caffeine keeps us awake. [via CBS News 4/21/2005] When cells in a certain part of the brain become overworked, a compound in the brain kicks in, telling them to shut down. This causes people to become drowsy and fall asleep. Alter that natural process by adding coffee or tea, and the brain compound - called adenosine - is blocked, and people stay awake. "We knew that coffee kept us awake," Dr. Greene said. "Now we know why: Coffee and tea are blocking the link between the prolonged neural activity of waking and increased levels of adenosine in cells, which is why they prevent us from getting drowsy." Press release: Overworked brains release adenosine to slow cells, trigger sleep process. Neuron article: Adenosine Mediation of Presynaptic Feedback Inhibition of Glutamate Release.   9:05:30 PM   Best-ever Freeware Utilities [TechSupportAlert 3/1/2005 via Lockergnome 4/22/2005] There are a lot of great freeware products out there. Many are as good or even better than their commercial alternatives. This extensive list features Ian Richards' personal pick of the "best of the best," by category.

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