Weatherproof Outdoor Speakers: Polk Audio Atrium Self-Powered Loudspeakers

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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 […]

Book Review: Portable Houses

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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 […]

3D LED Reactual Sculptures by James Clar

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< 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 […]

Non-Toxic Infant Toys and Teethers

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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).