A stove that runs on water...  A washing machine that doesn't use water...  These and many other energy saving devices were showcased at Taiwan's green expo.

Did you know that a medium-sized dog has the same environmental footprint as driving 10,000 km in a land-cruiser?  Yes, our furry friends have a large ecological impact.

Here is a ready-to-assemble "Pop-up" house.  Cheaper than a pre-fab, it only requires screws and glue to put it together.  Very energy-efficient and takes advantage of natural lighting.

Futuristic man-hole cover powered by rain-water.