By John Perlin
Chinese archaeologists have recently found the oldest solar device – a bronze concave mirror – capable of almost instantaneously making fire from sunlight.
But what happens if progress in poverty’s eradication far-outpaces green energy solutions? Two of the most important issues of our century — clean energy and poverty eradication - are potentially mutually exclusive, if development efforts do not factor in increased consumption that will occur.
By Toby Grotz
Nothing lasts forever, let's do the math.
Alternative energy has become a hot topic in recent years as we try and work towards more sustainable resources. Whether we'll get there or not remains to be seen.
By John Perlin
When writing his great work On Architecture, Rome’s greatest solar architect Vitruvius emphasized proper solar orientation for buildings and bath houses.
Outside of a few rare equipment failures, we’ve never had a power outage in the past 20 years that wasn’t our own fault — usually caused by not paying attention to power use or proper battery charging. Weather failures, on the other hand, are starting to become noticeable.
The sun provides us with enough clean energy that if ever effectively harnessed, we might never need any other form again. Sadly, we are only able to harness a fraction of it's potential. Fortunately, we are making great progress to get where we want to be.
Here are three of the season’s brightest and cleanest gifts for a greener holiday celebration.
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