[Pete from Shawnee Mission]

Then there is this:

http://www.ncregister.com/daily-news/birth-control-in-drinking-water-a-fertility-catastrophe-in-the-making

It was posted here a few days ago I think.

For something on zebra mussels go to 36:20 of this youtube video;

https://www.youtube.com/watch?v=1lWeYa0_5bc

[Cincinatus' Wife]

I was talking to one of my grandsons about the invasive zebra mussel awhile back. Their “story” is a very good teaching tool.