Traveling between cities by high-speed rail uses as much as a third less energy per passenger-mile than the same trip by car. The United States currently has just one high-speed line–a 735-kilometer system serving Boston, New York City, and Washington, DC. The Obama administration is investing $8 billion to jump-start the development of 10 high-speed rail lines around the country, but no firm date for construction has been set. Meanwhile, Europe is planning a significant expansion of its high-speed rail network: 8,000 kilometers are due to be added in Spain alone by 2020. Most ambitious of all is China, which announced in September that it plans to construct 42 high-speed lines, totaling 13,000 kilometers, by 2012.
Geoffrey Hinton tells us why he’s now scared of the tech he helped build
“I have suddenly switched my views on whether these things are going to be more intelligent than us.”
ChatGPT is going to change education, not destroy it
The narrative around cheating students doesn’t tell the whole story. Meet the teachers who think generative AI could actually make learning better.
Meet the people who use Notion to plan their whole lives
The workplace tool’s appeal extends far beyond organizing work projects. Many users find it’s just as useful for managing their free time.
Learning to code isn’t enough
Historically, learn-to-code efforts have provided opportunities for the few, but new efforts are aiming to be inclusive.
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