If you buy it, eat it
Let me guess: You're concerned about the environment. You recycle, buy the right light bulbs, drink from a reusable water bottle (preferably one made of metal) and wish you could afford a hybrid. You try to remember your reusable shopping bags when you go to the market and feel guilty when you don't.
But there's something you could be doing that would make a much bigger difference, and it's not one of those really hard things like carpooling to work or installing solar panels on your roof.
All you need to do is minimize your food waste. If you buy it and bring it home, eat it. That alone is one of the easiest ways to aid the environment.
Illustration credit: David Gothard / For The Times