Web watch

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

http://www.na.unep.net/atlas/AfricaAtlas

The United Nations Environment Programme has just published Africa: Atlas of Our Changing Environment . Based on recent and archival satellite images, the atlas documents natural and manmade changes to Africa’s forests, plains, lakes, and other features. A hard copy of the atlas costs $150, but you can download PDFs of all the chapters for free.

http://www.internano.org

InterNano is a new, open-source clearinghouse for researchers engaged in nanomanufacturing. The site offers tools, news, calendars, and other resources. But even if nanomanufacturing is not your field, the gallery of images is worth a visit.

http://www.perimeterinstitute.ca/Outreach/Public_Lectures/View_Past_Public_Lectures

Canada’s Perimeter Institute for Theoretical Physics invites its distinguished vistors to give public lectures . Gerard ‘t Hooft’s “Science Fiction and Reality” is among the lectures that you can watch, read, or hear on the institute’s website.