Word: cadmium
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...biggest problem here and throughout the Rockies is acidic drainage. Gold-bearing rock tends to contain large quantities of sulfur, which form sulfuric acid when exposed to air and water. The acid puts such highly toxic metals as copper and cadmium into solution, and the poisons kill aquatic life. That happened before when Henderson was mined...
...electric vehicles, which are powered by cumbersome battery systems. The traditional lead-and-acid batteries require 100 times the weight and 30 times the space of conventional gasoline tanks to push even the lightest cars a fraction of the distance -- less than 100 miles at 25 m.p.h. Nickel-cadmium batteries provide 50% more power but at eight times the price (around $30,000, replaceable every two or three years). Sodium-sulphur batteries offer three times the energy but run both hot (at temperatures of 600 degrees F) and volatile. When exposed to water in crash impacts, they have an unpleasant...
...Detroit automakers realize that proving themselves wrong is the best way to reclaim market share. Says a senior executive of the Big Three: "The Japanese are our biggest worry. They are going to do anything absolutely necessary to keep their golden market." Though Nissan demurs that its own nickel-cadmium model is not quite ready for prime time, it has already produced the first advertising slogan of the new electric age, describing its FEV concept car as "gentle to people, gentle to society, gentle to Earth...
...worry that your computer may run out of juice in the mddle of a lecture always looms over your notebook computing life. One solution: Get a notebook that uses nickel hydride (niH) batteries, which on the average have 50% longerl ife han the more common and less expensive nickel cadmium (niCad) ones...
...technology that most fascinates visitors is a method for peering below the surface of a finished artwork and analyzing the various layers of paint it contains. The technique, computerized infrared reflectoscopy, is based on the fact that some pigments that reflect light in the visible range (like cadmium red) are more or less transparent to infrared light. By looking through these layers, art historians can catch glimpses of the artist's original handiwork: rough sketches, repaintings and the occasional erasure. Other techniques, notably X-ray analysis, had been used in the past. The major advantage of using a computer with...