The Chinese company DeepSeek seemed to have come out of nowhere this week when it upturned markets. Here’s what to know about the engineer who started it.
President Trump’s decision to pull out of the international health agency could deprive the United States of crucial scientific data and lessen the country’s influence in setting a global health agenda.
Social media exploded in a celebration after the news that a Chinese start-up had made an artificial intelligence tool that was more efficient than any in the United States.