Sperm whale feature in X-Ray Magazine

I have a sperm whale feature in the current issue of [X-Ray Magazine (#35)](http://www.xray-mag.com/newsletter/subscribers/2010-04/newsletter.html) ([PDF, free download](http://www.xray-mag.com/en/content/x-ray-mag-35)). Check it out if you're interested in the sperm whales I spoke about at [TEDxBerkeley](http://echeng.com/journal/2010/04/04/eric-cheng-ted-talk/) last Saturday!