The single greatest source of greenhouse gasses AND of polution in general is... (Xpost from enviro)

[Binkie The Clown]

... animal agriculture. Far greater than all the transportation sources, cars, trains, trucks, airplanes, in the whole world put together.

And, you, all by yourself, could conserve over 11,000 gallons of water per day by not eating meat.

But, of course, few people are willing to do something so drastic to save the planet. Yet they are willing to blame somebody else: The oil industry, the auto manufacturers, fracking (which releases a TINY fraction of the methane released by animal agriculture). Yet everybody talks about what the OTHER guy needs to do, without being willing to make the biggest contribution they could possibly make toward saving the planet. Change all your bulbs to compact fluorescent, switch to a hybrid car, turn down your thermostat, take shorter showers, plant your yard with drought-tolerant plants so you don't have to water them, recycle, compost your waste and use it in your home garden,... all wonderful things to do. But eat ONE Big Mac and you've wiped every good thing you did for an entire year in one selfish act of I-don't-give-a-damn-about-the-planet.

http://www.cowspiracy.com/ Watch it on Netflix instant.

(Standing by to have everyone tell me I'm wrong. Sorry. I'm not wrong. But it IS easier to blame the other guy, so that's what people will do.)