[–] KinkRaven 1 point 0 points 1 point (+1|-1) ago
Colony collapse was never a major worry about losing honey bees. While the death rate of hives were higher than normal the overall number of hives continued to grow.
Tracking down the pesticide that was causing it was good work though and to my understanding has started to recover.
[–] qwop 1 point 0 points 1 point (+1|-1) ago (edited ago)
If you want to follow the DDT rabbit hole, then this page has one of the best compilations of the DDT and polio timeline you will find:
http://harvoa.org/polio/pol_all.htm
And if you want to learn more about the whole history of polio, then this presentation is also excellent:
"Smoke, mirrors, and the disappearance of polio":
https://www.youtube.com/watch?v=Twch-T-n8Ns