Erin Brockovich's latest campaign

Erin Brockovich, a US consumer health advocate whose life story was the basis for an Academy Award-winning film, has urged senators to pass a law to document disease clusters in the United States.
A disease cluster is an unusual number of health events, such as reports of cancer, grouped together in a time and location, according to the Centres for Disease Control.
Brockovich, who came to prominence investigating the prevalence of cancer cases in Hinkley, California, said she has become an informal reporting agency for those who worry that something in their immediate environment is a health hazard.
"Thousands of Americans contact me every month asking for help and telling me about unexplained diseases in their neighborhood or on their streets," Brockovich told the Senate Environment and Public Works Committee.
She offered a map of the United States and Canada she said she put together by plotting these calls geographically, showing calls from almost every US state and several Canadian provinces.
"This is not a scientific sampling but simply a map of people who are reaching out to me for help because they are concerned that environmental pollution in their community has made them sick," Brockovich said.
Senator Barbara Boxer, a California Democrat who chairs the committee, co-sponsored a bill meant to increase coordination, transparency and accountability when federal agencies address potential disease clusters.
Boxer said US childhood cancer rates have increased by more than 20 per cent from 1975 through 2007, and that while the exact causes is not always known, "two often-discussed factors are genetics and environmental causes."
The bill, also co-sponsored by Senator Mike Crapo, an Idaho Republican, is known as Trevor's Law, named for Trevor Schaefer, a 21-year-old survivor of brain cancer from Boise, Idaho.
Schaefer, who testified at the Senate hearing, and his family have created a foundation that has been fighting for better investigations into the causes of cancer clusters.
A study by the Natural Resources Defence Council and the National Disease Clusters Alliance reported 42 disease clusters in 13 US states, showing incidence of numerous types of cancer, birth defects and other chronic illnesses.
Julia Roberts won the Academy Award for best actress for her portrayal of Brockovich in the 2000 movie Erin Brockovich, which focused on the advocate's work as a paralegal with residents of Hinkley.