What is the easiest thing you can do to help the environment?

... not only is it easy, but it will save you money.

The victory of expensive tap water in disposable bottles delivered by trucks and labelled by Coke ("dasani") and Pepsi ("aquafina") over inexpensive tap water delivered through (emission-free) pipes is a victory of expensive advertising and scare tactics over common sense and the common good. But it may, with just a little help like this editorial in today's New York Times, be just a temporary victory.