OpenAI’s board of directors has formally rejected an offer from a group of investors led by Elon Musk to buy the nonprofit for $97.4 billion. Scarlet Fu reports on “Bloomberg The Close.” ...

The Horrible Histories Esperanto Song is out, so it’s time to test your skills! Can you guess the correct words in Esperanto and be fantastically fluent, or will your score be a fumbling flop?