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  1. 22 hours ago · Depleted uranium ( DU; also referred to in the past as Q-metal, depletalloy or D-38) is uranium with a lower content of the fissile isotope 235 U than natural uranium. [2] Natural uranium contains about 0.72% 235 U, while the DU used by the U.S. Department of Defense contains 0.3% 235 U or less. The less radioactive and non-fissile 238 U ...

  2. en.wikipedia.org › wiki › AlaskaAlaska - Wikipedia

    22 hours ago · Alaska's economy depends heavily on increasingly expensive diesel fuel for heating, transportation, electric power and light. Although wind and hydroelectric power are abundant and underdeveloped, proposals for statewide energy systems were judged uneconomical (at the time of the report, 2001) due to low (less than 50¢/gal) fuel prices, long distances and low population. [121]

  3. 22 hours ago · American writer Mark Twain (1835−1910) German inventions and discoveries are ideas, objects, processes or techniques invented, innovated or discovered, partially or entirely, by Germans. Often, things discovered for the first time are also called inventions and in many cases, there is no clear line between the two. German-born Albert Einstein, world-famous physicist Germany has been the home ...