If I had the money, I wouldn't donate to environmental groups. When I was younger I was very much an environmentalist, I was even in the Earth Club in high school, and I used to toe the line about conventional agriculture, genetic engineering, and nuclear power...until I actually looked into these issues for myself, and I realized they were full of it, at least with regards to those issues.
Why am I singling out just those issues? Because food and energy production are two of the most critical issues we have, and as the third world, led by China and India industrialize and develop, these issues are becoming more pressing. Our climate is changing, even though we are accelerating it, it will still continue to change regardless of what we do (North Africa used to be a very green place) and so we will need to adapt our agriculture to cope with that. Genetic engineering is the only way we can do it quickly enough, so why not use it? Becuse it goes against doctrine of course.
As for energy, nuclear is the only sane way forward. It's per kilowatt cost is low, it's very efficient, and it's clean. Yet many of the environmentalists instead want us to commit our entire production method (what can't be filled by river wrecking dams that is) to solar and wind, in other words have all our computers, lights, and industries powered by two of the least efficient and most unreliable we have. Frankly, this doesn't make sense to me. But, despite the mountain of scientific and technical evidence we have to the contrary, they still keep spouting the same old "nuclear is dangerous because of chernobyl/waste/etc". Earlier this year a friend of mine went to a lecture, where the speaker was from The Sierra Club talking about how dangerous and bad nuclear power is. A few months ago,
the Greenpeace anti-nuclear blog got rid of its comments section and erased all archives of all previous comments because people would constantly post about their inaccuracies and poor reasoning. This is telling of what this is all about: dogma.
So, environmentalism has somehow (d)evolved from a means to identify real problems and suggest practical solutions (resulting in such good things as the clean water act to stop toxic chemicals from being dumped everywhere) into a religion. While I do agree with some of what they say, save the whales, don't dump crap into the water, etc., I feel they aren't helping us anymore by pushing for low efficiency food and energy production. I don't have faith in them anymore, I have faith in science now. But yeah, if I wasn't a broke student I'd be donating to PBS. They do good work, and don't get the credit they deserve.