Artificial turf has been in the news lately for suspicions that it could contribute to certain types of cancer.
Enlarge Icon
Artificial turf has been in the news lately for suspicions that it could contribute to certain types of cancer.
Credit: Flickr Photo/Lisa Parker (CC-BY-NC-ND)

When Can You Say Something Causes Cancer?

Marcie Sillman talks to Dr. Parveen Bhatti, environmental epidemiologist at the Fred Hutchinson Cancer Research Center, about how researchers determine causality.

What do you think?

We'd love to hear your thoughts.