December 6, 2021

It’s the most successful video app in the world. Our columnist has obtained an internal company document that offers a new level of detail about how the algorithm works.

The country regards children as crucial in its quest for herd immunity, but some parents, worried about the vaccines’ safety, are pushing back.

The automaker may have undermined safety in designing its Autopilot driver-assistance system to fit its chief executive’s vision, former employees say.

They are eyeing BuzzFeed’s market performance as they face a tough advertising climate and look for ways to pay back their early investors.

Farmers in India are desperate. Trucks in South Korea had to be idled. Food prices, already high, could rise even further.