BBC investigates Byju's sales and culture; Jeff Bezos Earth Fund makes more grants; Pinterest buys Vochi; WhatsApp adds auto-delete feature

The BBC reports that an investigation has revealed allegations made by parents as well as employees against Byju's India's most valuable startup. Byju's has denied the allegations. Jeff Bezos's Earth Fund has made $443 million in fresh grants; Pinterest expands video capabilities, buying Vochi and WhatsApp adds auto-delete functionality to chats