Just in time for the holidays: an electricity monitor, a water-powered clock, a light made from textiles, and more
It's not all fun and games. Some gadgets are designed to help measure and curb energy usage, cut down on wasted paper, and clean without the need for toxic chemicals.
Green Gadget Slide Show
See also this year's:
High-Tech Toys Slide Show
Showcase for Socially Responsible Inventions
Larry Greenemeier is the associate editor of technology for Scientific American, covering a variety of tech-related topics, including biotech, computers, military tech, nanotech and robots.