This isn't an adult tricycle, it's an innovative way to reduce the number of people — estimated at 1.1 billion — who lack access to clean drinking water.

The Aquaduct is essentially a bicycle that can transport and filter up to 20 gallons of water at a time.

It's simple to use: Just ride to your local water source and pour water into the rear holding tank. As you ride home, the pedaling forces the water through a filtration system and into a smaller holding tank in the front. You can also filter the water by pedaling in place.

Watch the video to see how it all works.

Recognizing the health and pollution concerns associated with traditional wood-burning stoves, researchers from Envirofit are developing a cleaner burning stove that reduces smoke output and uses less firewood. It is estimated that "80 percent of rural households in developing countries cook with solid fuels like wood, coal, crop residues and dung." (World Health Organization)