Greenpeace

I didn't make any resolutions specifically for new years, but I did recently resolve to be totally vegan (I have long been a vegetarian) from now on, and part of the motivation is that animal agriculture is such a huge contributor to deforestation and to pollution of lakes and rivers and to various other environmental problems. The other big motivation is of course that it prevents suffering to animals.

I am also looking into getting a hybrid car sometime in the next year or two, but this is of course contingent on having the money and so the option isn't available to everyone.

Another resolution I took recently is to stop using products from Kimberley-Clark (look up Greenpeace's Kleercut campaign if you don't know the details) and to find out other companies that cut down ancient forests for their products and similarly boycott them, and encourage others to do the same.

I want to start using CLF lightbulbs to save energy/reduce output.

I am also the founding member of my school's Greenpeace chapter, and we are going to working on a number of projects this semester. Likely you've already done this, but you should find out if there's an environmental issues group in your area that you could participate in, and if there's not, you can start one. Greenpeace has lots of useful materials to help people get groups started and to help run campaigns.