As of right now, Nvidia has access to a database of "400,000 video clips representing 1,000 signed words", which is then ...

Language-learning app Duolingo makes around $500 million annually, despite offering all of its lessons for free. WSJ explores how the company is using AI and A/B testing to keep users hooked.

The language -learning app Duolingo announced on Feb 11 that its make-believe mascot, Duo the Owl, mysteriously died; and the internet has been trying to figure it out.

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