ALT Most pesticides for dealing with Colorado potatobeetle infestations can kill harmless species. A newpesticide, called Calantha, is much more specific because ittargets a gene found in the pest and its close relatives. Appliedas a spray, the pesticide is eaten by beetle larvae and kills them byactivating a process called RNA interference.

ALT Promotional graphic for a lecture by Sophien Kamoun titled The Evolution of Plant Disease. On the left, Kamoun is shown speaking at a podium, gesturing with one hand. On the right, the text reads “Sophien Kamoun – The Evolution of Plant Disease.” Logos for Vanderbilt Evolutionary Studies and the National Center for Science Education appear at the bottom, along with a small photo of a wheat field.

ALT For thousands of years, Andean farmers have cultivated colorful landraces of domesticated potatoes, such as lioness, tunica, and tarmeña shown in this arrangement.