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High-Speed Rail: The Real Estate Express in China
China’s high-speed rail (HSR) network spans an impressive 48,000 kilometers, the largest in the world. Yet, behind the gleaming trains and modern stations, there’s a stark reality: over 90% of these lines are operating at a loss.
时政
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twitter.com
)
由
Desmond Shum
提交
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Why does SpaceX build its own rockets?
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Why does SpaceX build its own rockets?
In 2001, Elon Musk traveled to Russia hoping to purchase refurbished Intercontinental Ballistic Missiles (ICBMs) for a low-cost Mars mission. But the prices were too high, and the negotiations fell flat.
That experience convinced him that
btc
(
twitter.com)
00:01:34
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ELON MUSK: "You could go from LA to Sydney in less than half an hour, LA to Tokyo in less than half an hour, New York to Singapore in half an hour. Across the Atlantic in 10 minutes. You're going 25 times the speed of sound, 30 times faster than than a commercial aircraft."
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ELON MUSK: "You could go from LA to Sydney in less than half an hour, LA to Tokyo in less than half an hour, New York to Singapore in half an hour. Across the Atlantic in 10 minutes. You're going 25 times the speed of sound, 30 times faster than than a commercial aircraft."
btc
(
twitter.com)
00:00:40