The Environmental Energy Technologies Division’s Residential Building Systems Group would like your help in modeling indoor exposure. Please take a few minutes to fill out this survey on what and how you have cooked in the past 24 hours in your home. The survey does not ask for any private information and should take only 10 minutes of your time. Previous work in the Group (homes.lbl.gov) has shown that cooking at home is a significant source of indoor air pollution. The survey results will be used to develop behavior protocols for use in indoor exposure models at LBNL. This research is approved by the Lab’s Human Subjects Committee.