Make a difference in the challenge to confront global warming and prevent nuclear war and the development and use of nuclear weapons.
The PBS Documentary Command and Control illustrated the risks of maintaining nuclear arsenals. We need your help to stop a whole new nuclear arms race.
Drinking Water Fact Sheet: Cryptosporidium
Cryptosporidium parvum (C. parvum) is a protozoan parasite known to infect humans and many animal species. The infective oocysts of Cryptosporidium are shed in the feces, and infection can occur by consumption of contaminated food or water, ingestion of contaminated recreational water, or through contact with feces of infected persons or animals. Cryptosporidium is not new, but is has gained recognition, both because it has become more widespread and because of evidence that there are potential life-threatening consequences of infection in the growing population of immunocompromised persons.
Last Updated July 30, 2013
In the Spotlight
November 30, 2016
Eating for Climate and Health
PSR's new PowerPoint presentation on how climate change impacts food production, and agriculture's contribution to climate change.