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VoiceThread - Conversations in the cloud

VoiceThread Universal lets you browse threads and hear comments in pages specially designed for screen readers. Click here to go to VoiceThread Universal

Light pollution - Wikipedia

Light pollution, also known as photopollution, is the presence of anthropogenic light in the night environment.It is exacerbated by excessive, misdirected or obtrusive uses of light, but even carefully used light fundamentally alters natural conditions.

Light-emitting diode - Wikipedia

A light-emitting diode (LED) is a semiconductor light source that emits light when current flows through it. Electrons in the semiconductor recombine with electron holes, releasing energy in the form of photons.

WBDG | WBDG - Whole Building Design Guide

The Gateway to Up-To-Date Information on Integrated 'Whole Building' Design Techniques and Technologies. The goal of 'Whole Building' Design is to create a successful high-performance building by applying an integrated design and team approach to the project during the planning and programming phases.

Last Word Archive | New Scientist

If a car moving at 100 kilometres per hour hits a concrete wall, all of its kinetic energy must be turned into other forms of energy. What are those forms, and can anyone describe the overall ...

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Azzedine Alaia Articles Back. Sad to hear that Azzedine Alaia passed away last Sunday in Paris. We were fortunate enough to design his first fashion show in New York City in 1982 at Bergdorf Goodman and to work with him on his windows on 5th Avenue .

ACS Applied Materials & Interfaces (ACS Publications)

Surface-Supported Metal–Organic Framework Thin-Film-Derived Transparent CoS 1.097 @N-Doped Carbon Film as an Efficient Counter Electrode for Bifacial Dye-Sensitized Solar Cells

Best 68+ Kitchen Ideas With Light Cabinets Free PDF Video ...

Kitchen Ideas With Light Cabinets. $2000 Tiny House Plans This Tiny House Costs Less Than $2,000 to Build - The SpruceYes, you can build this rustic cabin, which packs 400 square feet of living space, for less than $2,000.

Solar space heating -- active and passive solar projects for ...

Plans for a wide variety of solar space heating projects you can build. Solar space heating can be 25 or more times more cost effective than solar electric (PV) systems, and the systems are excellent DIY projects. Payba

Best 28+ Greenhouse Building Kits Free PDF Video Download

The Best Greenhouse Building Kits Free Download. The Internets Original and Largest free woodworking plans and projects links database. Free Greenhouse Building Kits Access.