The Insect Alternative

May 24, 1978 on PBS at 9:00 PM


In a world that each year loses up to 40 percent of its crops to insects, some form of pest control is desperately needed. But chemical pesticides have backfired. Pesticide-resistant insects frequently develop, and previously harmless insects have be... (more)come devastating infestations. Farmers have found themselves trapped on a "pesticide treadmill"—the more they spray, the more they have to spray. NOVA examines several alternatives for pest control.

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Season 5 Episode 15

May 10, 1978

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Season 5 Episode 17

May 31, 1978