Organic Authority has a great article highlighting the five most widely used pesticides that are wreaking havoc on biological life. The first one is now fairly well known (glyphosate), but it is good to get acquainted with the rest as well. Atrazine, for example, has been shown to emasculate 75% of male frogs turning 1 in 10 into females!
The five are:
5) Metam sodium
Check out the article below to get brief descriptions of the top 5.