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Since the ban on the powerful, but dangerous pesticide DDT in 1972, chemists have been searching for alternatives. With each new wave of inventions, they’ve encountered the same obstacle - rapid species evolution. As pesticides destroy pest populations, they leave behind only the most resistant individuals. Those remaining bugs then pass on their pesticide-resisting genes to the next generation. That’s lead to the rise of super bugs, such as the Colorado potato beetle, which is resistant to over 50 different insecticides.

From the TED-Ed Lesson Do we really need pesticides? - Fernan Pérez-Gálvez

Animation by Mighty Oak