Finding a Pest Predator 18Aug17

Published: Aug. 18, 2017, 4 a.m.

When an invasive insect from Japan began wiping out eastern hemlock trees, scientists found the pests' natural predator in Japan. Our GDPR privacy policy was updated on August 8, 2022. Visit acast.com/privacy for more information.\nLearn more about your ad choices. Visit megaphone.fm/adchoices