A man in California documented scores of dead bees found between two cellular towers.
In the video, published last month, the man films numerous small honey bees lying dead on the ground in Sierra Madre, as he stands between the two towers he believes are emitting deadly 5G radiation.
That should be really easy to do real experiments with. Lay some sheets out at various locations around the tower and count the dead bees that fall on them over a set period of time.
If the D's want to talk about the environment, they'd get a lot more mileage out of 5G than global warming.