Into The Biosphere

I bought the bare essentials for a mini-aquarium that I will introduce to the class tomorrow. I've never done this before so I hope I don't mess anything up. If everything goes OK, I'll introduce a couple of goldfish later and I will call them Theo and Thea.

“ .... human population growth within the ecosystem is closely analogous to the growth of malignant tumor cells within an organism: man is acting like a cancer on the biosphere. The multiplication of human numbers certainly seems wild and uncontrolled… Four million a month ...… We seem to be doing all right at the moment; but if you could ask cancer cells, I suspect they would think they were doing fine. But when the organism dies, so do they .....”   (Marston Bates)