This is such an important topic. Without the bees, our food chain collapses and the process of pollination and plant reproduction faces dire consequences.
We have known about this for years but I'm glad they're conducting more recent studies on these toxic pesticides.
Here's a study from 2014 linking neonicotinoids to the collapse of bee colonies:
https://www.hsph.harvard.edu/news/press-releases/study-strengthens-link-between-neonicotinoids-and-collapse-of-honey-bee-colonies/
This isn't a widely discussed topic, but it should be.