To suggest topics or sites for Web Watch, please visit http://www.physicstoday.org/suggestwebwatch.html. Compiled and edited by Charles Day

Open Hazards can tell you the likelihood and potential severity of an earthquake at any location in the world. The site’s prediction algorithms are based on current and historical data and on models of earthquake behavior.

Thanks to the internet, geographically distributed computers can be linked together to perform shared tasks. The online newsletter International Science Grid This Week covers the use of distributed computers to analyze and simulate scientific data.

Optics Express, the open-access journal of the Optical Society of America, has a new bimonthly supplement devoted to the use of optical science and technology in renewable and sustainable energy. Called Energy Express, the new supplement will be devoted to one topic each issue. Solar concentrators was the focus of the inaugural April 2010 issue.

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