The Tesla and SpaceX founder announced a goal of implanting chips into human brains as early as next year to create direct human connections to computers.
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The price of textbooks in the U.S. increased by 90 percent from 1998 to 2016.
As Amazon rolls out hundreds of deals, warehouse workers walked off the job, calling for safer workplace conditions and less strenuous standards to meet the huge demand for free two-day shipping.
Newly released economic data shows that tit-for-tat tariffs are prompting China to buy from other countries, instead of the U.S.
U.S.-Chinese trade has weakened since President Trump started hiking tariffs last year on goods from China in a fight over Beijing's technology ambitions.