Robot Fish

Pretty cool!

More like this

So, I'm catching up on my Chronicle of Higher Education reading, and I come across this article (you need a subscription):
It was 75 degrees yesterday. It got down to 24 today.
Animals with cool names (binomial, but cool).
The AIP's Physics News Update this week highlights a paper on the laser cooling and trapping of radium by a group at Argonne National Laboratory.