simulation 

Gene Linked to Dad's Ability to Father Sons, Daughters

Do men determine the sex of their babies? This question is a little more complicated than the old "XX, XY" scenario. We've long known that the father supplies the sex of the baby to be in his sperm by providing either an additional X or Y chromosome....

San Francisco Police take on school shootings

We were all in the car, taking Jared to school when we spotted the police cars at the high school a couple of blocks away. A dozen of them, perhaps more. We would have been concerned, had we not seen the large highway signs saying "Police Training in...

Too much phun

If you've got kids, go and download this program right now. Go ahead, I'll wait. What's that? You want to know what it is first? Well, okay. It's a two-dimensional physics lab in your computer. Check out this description and demo video. Basically, it...

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