Want To Know How Far Artificial Intelligence Has Come? Just Look At CAPTCHA 4:50pm April 16, 2019 Technology Share URL copied to clipboard! Copyright 2019 NPR. To see more, visit https://www.npr.org. 300x250 Ad More All Things Considered World News A U.S. doctor in Gaza wants President Biden to know 'we are not safe' National Pod Corner: 'Uncuffed' 300x250 Ad Support quality journalism, like the story above, with your gift right now. Donate