Also, edible vaccines no more needles, just eat your greens. And, an excursion into the rotting world of fungus. Also, botanist Barbara Ertter tells Judith Strasser that there are many plant species left in North America which haven't been discovered and named yet, and that you don't have to be a specialist to find them. Ertter is Curator of Western North American Flora at the University and Jepson Herbaria at the University of California, Berkeley. She talks with Judith Strasser about the social history of this common spring flower, which caused people to bankrupt themselves collecting bulbs in the seventeenth century and is still a significant factor in Holland's economy.
Edible vaccines are the latest thing in genetic engineering.
Plant pathologist Tom German tells Jim Fleming how food can replace the hypodermic for delivering vaccines. He tells Steve Paulson some of the marvelous things fungi do for us, from garnishing pizza to recycling garbage.