Years ago in my hometown of Nashville, Tenn., I wrote an article about conserving water while brushing one's teeth.

The article detailed ways to "save the planet" during Earth Day, and one of my suggestions was to turn the water off while you brush your teeth. This step alone can save gallons of water, and I have passed this tip down to my 6-year old daughter, Willow.

Now I am passing along this tip to you!

What tidbits of knowledge have you passed down to your children?