Is This The World’s Most Efficient Windmill?

Is This The World’s Most Efficient Windmill? (photo: William Kamkwamba)

Sometimes the epitome of efficiency is using whatever tools are available to accomplish the job at hand. No one understands this better than William Kamkwamba, a teenager from rural Malawi whose ingenuity provided his family and neighbors with electricity from a most unlikely source.

GreenFiber Cocoon Insulation: Energy Efficiency From Recycled Material

One of the simplest ways to improve a home’s energy efficiency and comfort is to make sure that it is properly insulated. Cocoon Insulation from North Carolina-based GreenFiber is a highly efficient insulator, offering more convenient installation and higher R-values than common alternatives, as well as utilizing recycled source material.

Biogas: Producing Ultra-Efficient Fuel From Sewage

We could be generating huge amounts of power from sewage. The process is fairly simple — just ferment sewage to produce a fuel called biogas. Biogas is almost entirely methane, and so is natural gas, so the two are essential interchangeable. The potential to produce biogas is almost entirely overlooked by most countries — except Sweden.

Christmas Trees Made With Recycled Bottles

These two Christmas trees were made with recycled bottles. Quite an efficient use for all those empties! The one of the left was made with 1050 beer bottles by Paul Deakin, a student at the University of Southampton (the south coast of England). The tree on the right was made with Grolsch beer bottles. Anyone feeling inspired to knock a …

Can-Crushing Frog

frog-can-crusher-two-states-from-uncrushed-to-crushed

From Japan, comes this frog that can crush cans! You can buy it from this Japanese store. A less whimsical can crusher can be found at Amazon for $20.

Bottle Crusher For Bars and Restaurants

An Australian company, BottleCycler, has developed a machine that crushes glass bottles, reducing the volume taken up by the bottles by 80%. Bottles are fed into the BottleCycler through an opening in the top of the device, which then quietly slices the glass into recyclable pieces. The glass falls into a garbage bin, which is picked up and emptied by …

Efficient Repurposing: Twist & Spout

Here’s a way to reuse virtually any soda or water bottle with a screw-on cap. It’s called the Twist & Spout, and it comes in two varieties. Use the Garden style to create a watering can. Use the Kitchen style to make those two-liter soda bottles easy to handle. A set of two is available from Perpetual Kid for $5.99.