(not a photo of the actual fungicide)
Ok. This isn't really a joke.
Researchers at my alma mater, the University of South Florida, recently found that the fungicide chlorothalonil, in the same family as DDT, killed almost 90% of the frogs exposed to it. They tested several species of frogs, and all had the same reaction. They are now testing the chemical's mortality rate for other organisms, including bees.
The link is here.
Chlorothalonil is a widely used fungicide. We use 14 million pounds of chlorothalonil per year in the United States, much of it sprayed on peanut, potato, and tomato plants. About 10% of it is sprayed on golf courses to control fungus growth on the turf.
That frogs are in decline and have been for some time is a well known fact. They have been compared to the "canary in the mine shaft" as an indicator of a healthy ecology. It will be interesting to see what further study reveals and if there is a honey bee connection..