Sustainable Technologies

Sustainable technologies work to reduce waste while maintaining efficiency. Learn about new ways to reduce your environmental impact in this section.

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From toothbrushes to iPhones, we fill our lives with a seemingly unending string of gizmos -- all of which depend on electricity to give us what we need to make it through the day. What if you could generate that power?

By Robert Lamb

The world flushes up to 20 percent of its drinking water down various drains. That's a lot of water going to waste. Waterless toilets could squelch the squandering.

By Susan L. Nasr

Solar energy is abundant and infinitely renewable. Therefore, it's not surprising to see the proliferation of devices that rely on the sun -- especially solar aircraft.

By Susan L. Nasr

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Cockroaches are taking a big bite out of a Chinese city's trash problem.

By Loraine Fick

The Northeast Blackout of 2003 left millions without power and cost approximately $6 billion. Experts believe we can avoid future blackouts by storing energy along the U.S. electric grid.

By Susan L. Nasr

Did you ever make a potato clock as a kid? If so, you already understand the basic principles that make a soil lamp work.

By Julia Layton

A 10-minute shower can seem like nothing on a cold, sleepy morning, but it might cost you 50 gallons of water (or more). Is there a way to limit the volume of water you use?

By Julia Layton

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Wine pomace — the portion of grapes left over from winemaking — has a variety of uses, from fertilizer to a nutrition-enhancing ingredient in foods.

By Patrick J. Kiger

As far back as 1500 B.C.E., people were trying to purify water to make it drinkable. And we're still at it. Today inventors use tools as simple as clay and as sophisticated as carbon nanotubes to bring clean water to the world.

By Patrick J. Kiger