18. Filter your own water rather than buying bottled water.
All of the plastic water bottles—produced and discarded—take a huge toll on the environment. A water filter installed on your tap gives you bottled water quality, without the waste.
19. Take showers instead of baths.
Taking a shower uses about ⅕ of the electric power required to heat your bath. Low flow showerheads limit the electricity use even more.
20. Plant a tree.
Trees absorb carbon dioxide and release oxygen. So, planting trees is a fantastic way to make the world a little greener (literally and figuratively) and reduce your carbon footprint.