Awesome Flash animation from the University of Utah, showing relative sizes from a coffee bean to a carbon atom. I wish it could also zoom out and show astronomical sizes, too, like this FSU slide show (not as smooth as the Utah one) or the famous Powers of Ten movie.
I just excerpted and linked to a story from the Huffington Post Blog, and after I checked my blog I found a strange link floating above all the rest of my text, making both my own text that was under the link and the link itself illegible. I had already included a link to the…
In several of my classes this week, I asked the students to estimate how many children had been poisoned by Halloween candy in the last 20 years. Guesses ranged from one per year to one, but nobody guessed zero. No child has been poisoned by a stranger’s goodies on Halloween, ever, as far as we…