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How Do Modern Spy Planes Evade Detection?
io9.com 4 weeks, 1 day agoWhenever we hear about reconnaissance planes, descriptor such as "stealthy" and "slipping under the radar" are bandied around. But what actually goes into making stealth fighters undetectable, and what are the limits of this undetectability? More ยป
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Doubts Cast On Cost Estimates For High-speed Rail Alternatives
latimes.com 1 month agoBullet train promoters predict it will cost $171 billion to build new airports and roads if the trains aren't completed. But experts say that figure is greatly exaggerated.As the price tag for California's bullet train has soared to nearly $100 billion, a central argument for forging ahead with the controversial project is an even loftier figure: the $171 billion that promoters recently estimated will be needed for new roads and airports if no high-speed rail is built.
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