Truffles are among the many foods infused with THC – the chemical in marijuana that gives you a high — already for sale in Colorado. Luke Runyon/KUNC/Harvest Public Media hide caption

itoggle caption Luke Runyon/KUNC/Harvest Public Media

University of California, Davis food safety field scientists Michele Jay-Russell, Paula Kahn-Rivadeneira, Anna Zwieniecka, Navreen Pandher and Peiman Aminabadi celebrate the first day of their experiment testing E. coli survival in soil. Courtesy of Fhon Saharuetai hide caption

itoggle caption Courtesy of Fhon Saharuetai

Pepper is the spice most commonly contaminated with salmonella and other pathogens. iStockphoto.com hide caption

itoggle caption iStockphoto.com

Brent Gentry of Underground Meats rotates a coppa. Underground Meats is behind a new project that aims to lower the barrier to entry for would-be artisanal meat producers by making it easier for them to craft food safety plans. Emily Julka/Courtesy of Underground Meats hide caption

itoggle caption Emily Julka/Courtesy of Underground Meats

Food chemists say that pigments from the purple sweet potato are becoming a "natural" alternative to synthetic food dye. avlxyz /Flickr hide caption

itoggle caption avlxyz /Flickr

Joe Buley owns Screamin' Ridge Farm in Montpelier, Vt. He says the FDA's new food safety rules threaten the viability of small New England farm operations like his. Here, Buley harvests cucumbers. Emily Corwin hide caption

itoggle caption Emily Corwin

Julia Child poses with "the chicken sisters" before an episode of The French Chef in which she teaches us how to roast a bird. Courtesy of Paul Child/PBS hide caption

itoggle caption Courtesy of Paul Child/PBS