Richard "Dick" Levins is a mathematical ecologist, and political activist. He is most famous for his work on evolution in changing environments. Levins' writing and speaking is extremely condensed. This, combined with his intransigently radical orthodox Marxism has made his analyses less well known than those of some other ecologists and evolutionists adept at popularization. Wikipedia
The definitive Wikipedia entry for Richard Levins. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Richard_Levins
[In my desire to cover as many points of view as possible, I asked Professor Richard Levins to write of his own activities in the cause of Puerto Rican independence. www.peacehost.net/WhiteStar/Voices/eng-levins.html