Sunday, August 20

• Cars, not cows, put most ammonia in our air - There's evidence that the main source of ammonia in the air we breathe is not livestock, but cars. Ammonia plays a role in the formation of the tiny particulate matter targeted by a controversial proposed environmental rule that will be argued before the U.S. Supreme Court this term. (FUEL 1, Sunday, Aug. 20, 9:15 a.m.)

• New coating could extend life of metals tenfold - Instead of preventing rust, a new polymer helps metals form their own layer of protection. Cars, bridges and pipelines with the coating lasted up to ten times longer. (POLY 21, Sunday, Aug. 20, 10:10 a.m.)

• First human studies indicate supplement could help control weight, fat and diabetes - A major symposium looks at whether a popular dietary supplement could help dieters keep the fat off even after they stop dieting and exercising, help people shed pounds, and boost insulin levels in diabetics. (AGFD 9, Sunday, Aug. 20, 1:30 p.m.; AGFD 23, Monday, Aug. 21, 9:50 a.m.; and AGFD 26, Monday, Aug. 21, 11:20 a.m.)

• Web could shake up peer review - Expert panelists will discuss the implications of providing access to chemistry research papers via the World Wide Web prior to peer review and publication in a scholarly journal or magazine. (Exhibit Hall, Sunday, Aug. 20, 4:00 p.m.)

Monday, August 21

• Add spice to your life - An expert from spice-making giant McCormick & Company will discuss using spices to extend the shelf life of foods as well as add flavor. (Exhibit Hall, 2:30 p.m.)

• New crop protection method could save U.S. farmers billions - Naturally occurring microorganisms could stave off "scab," a widespread fungal disease that threatens millions of acres of wheat, barley and rye. Scab has cost U.S. farmers $3 billion in the last 10 years. (AGFD 46, 3:20 p.m.)

• Can antioxidants beef up' plastic wrap? - When you spy a steak that makes your mo
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