Sparks of Life. "That the electric 'spark of life' figured prominently in debates over the nature of life in the late eighteenth and early nineteenth centuries is well known. Less well known is the fact that prior to this period, gunpowder was often identified with the substances that were necessary to life, if not as a vitalistic spirit, then as an essential element in the animation of the body. The idea of a spark of life went back to ancient times, likening living beings to the glowing embers of a fire. In the Old Testament, for example, the wise woman of Tekoah begs for the life of her son, pleading 'they will stamp out my last live ember.' But from the sixteenth to the eighteenth century, this vital flame was often equated with gunpowder. There was fire in the blood: not electric, but pyrotechnic fire."
posted by homunculus on Feb 20, 2009 - 11 comments

Baghdad nights: evaluating the US military ‘surge’ using nighttime light signatures (PDF). A team of UCLA geographers using satellite imagery to track the amount of light emitted in Baghdad at night found that electricity use in Sunni neighborhoods fell prior to the surge and never returned, indicating that ethnic cleansing by Shiite militias drove the Sunnis away before the surge began and was largely responsible for the subsequent decrease in violence. [Via Passport]
posted by homunculus on Sep 23, 2008 - 33 comments

A kilometre-high solar tower, to be built in the Australian outback by EnviroMission Ltd, will become the world's tallest structure when completed in 2006. Designed by Jorg Schlaich of Schlaich Bergermann und Partner, the solar tower (or solar chimney) operates like a hydroelectric power plant, but uses hot air instead of water, and it could provide enough electricity for 200,000 homes. Time calls it one of the best inventions of 2002, and I think it's one of the most ingenious ideas I've ever heard. Another solar chimney project was planned in Rajasthan, India, but I haven't found any information on its current status.
posted by homunculus on Jan 6, 2003 - 52 comments