Weatherproof Outdoor Speakers: Polk Audio Atrium Self-Powered Loudspeakers

The Polk Atrium loudspeakers are rugged, weather-resistant, self-powered and portable. Many outdoor speakers are suitable only for sheltered locations. The Atrium speakers meet industry & military specs for full exposure to the elements. The speakers are constructed of stainless steel and brass components to resist rust and corrosion. The cabinets are completely sealed to enhance weatherproofing and are designed to …

Book Review: Portable Houses

When some people vacation, they take their homes with them. Those are the people Irene Rawlings and Mary Abel write about in Portable Houses, a book devoted to all sorts of movable shelters and the people who created or renovated them. The examples featured in the book range in elaborateness from a canvas miner’s tent to a Boeing 737 jet …

3D LED Reactual Sculptures by James Clar

< James Clar makes 3D sculptures out of LEDs. They can function as a 3D spectrum analyzer or act as a primitive camera. Clar says "Each LED acts as one pixel in the spatial array and can be refreshed at a rate of over 60 frames per second creating a low resolution 3D television." We also like the back-lit wall ...

Non-Toxic Infant Toys and Teethers

Infants absorb chemicals more easily than adults — their bodies run at a higher metabolic rate, and their skin is ten times thinner. Infant toys and teether made of PVC plastic often leak phthalates (pronounced “thay-lates”) and other toxic substances (see more details in this report on 2003 PVC Report Card on Kid’s Toys Manufacturers).