ClinicalTrials.gov provides regularly updated information about federally and privately supported clinical research in human volunteers. ClinicalTrials.gov gives you information about a trial’s purpose, who may participate, locations, and phone numbers for more details. Before searching, you may want to learn more about clinical trials.

Postwar on the Web, by Hugh Eakin, posted January 15, 2004 in Slate, discusses “where to find solid data on how many soldiers have been killed in Iraq.”

Photos of the Martian landscape taken by Rover and Spirit, from NASA’s web site.