Ben Goldacre, M.D., a columnist for the British newspaper The Guardian, looks at science and medicine through a skeptical lens in this popular blog.Go to: http://www.badscience.net

Former Science News writer Wray Herbert blogs about human behavior for the Association for Psychological Science.Go to: http://www.psychologicalscience.org/onlyhuman/

National Geographic's Green Guide offers objective information and practical advice to consumers on how to lead a greener life.Go to: http://www.thegreenguide.com

This new site is a search portal to the digital libraries of leading science and technology societies. Enter a term into its search engine to find authoritative research, patents, and government documents.Go to: http://www.scitopia.org

Players of the virtual reality game Second Life can now soar through a virtual hurricane, experience rising through the atmosphere atop a weather balloon, and more at the National Atmospheric Administration's new site.Go to: http://www.esrl.noaa.gov/outreach/sl/

This Web site, created by the National Council for Science and the Environment, is a comprehensive, free, and dynamic resource for timely, objective, science-based information about the environment built by a global community of environmental experts. It features news, a forum, the Encyclopedia of Earth, and more.Go to: http://www.earthportal.org

The news is filled with stories about cancer risk. Some of the information can be confusing and contradictory. How do you know what to believe? This new Web site from the National Cancer Institute cuts through the hype to help you understand the plain and simple truth about cancer risk.Go to: http://understandingrisk.cancer.gov

This graphics-heavy online feature tells the stories of microbes that survive and even thrive in inhospitable environments, including bone-dry deserts, boiling acid, and radioactive rock. The National Science Foundation launched the site last month.Go to: http://www.nsf.gov/news/special_reports/microbes

This new educational site offers time-lapse and high-speed video clips, 3D scientific animations, and other visually stunning features that reveal how events unfold on different timescales—from billionths of seconds to billions of years—and take place too quickly or too slowly for the human senses to perceive.Go to: http://www.exploringtime.org

This unit of the U.S. government provides practical guides and fact sheets, most of which are free, on a variety topics related to particular aspects of health, food, computers, and more. Recent free documents include "Sleep Disorders," "Sunscreens and Tanning," and "Internet Auctions: A Guide for Buyers and Sellers."Go to: http://www.pueblo.gsa.gov