Groxie

The smart way to buy things this week—from tissues to geothermal heat. Don’t bother buying books anymore, and be a little more informed about the dizzying alternative car fuel choices. As a bonus, get a free education by watching some of the world’s most interesting and intelligent people give talks at TED.

• Guide to Home Paper Products

  Comparisons of the earth—friendliness of several brands of tissues, toilet paper, paper towels, and napkins.

• Financing Your Geothermal Project

  If you’re a homeowner don’t pass up this article about cheaper ways to switch to geothermal heating and cooling.

• BookMooch

  This new book exchange site looks promising - you earn points you can use for books or donate for charity.

• Comparison of Alternative Fuels

  Not very comprehensive data, but a neat chart that compares alternative fuels for cars based on cost and efficiency.

• Hans Rosling on TED Talks

  TED (Technology Entertainment Design) hosts brilliant speakers each year. This year they decided to let us normal folks download the talks. Rosling gives one of the best presentations I’ve ever seen. He challenges the current views of “developing” nations. Make sure you peek around and check out some other talks on the site.