Nova Season 5 Episode 15
Episode Title: Light Of The 21st Century
Countries:
USA,
Airing Date: May 10, 1978
Runtime:54 mins
IMDb Rating:
Watch Nova Season 5 Episode 15 full movie online free in HD with English subtitles – no download needed.
NOVA : 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 become 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.