India, June 7 -- Adani is still #1. But Zhang Yiming, who founded ByteDance in 2012, has knocked Mukesh Ambani off #2 of Asia's richest. He's worth $92.8 billion. His Doubao is the most popular AI chatbot in China. His biggest brand is banned here. What is it? X could have been called Yambuku, after the village in the Democratic Republic of the Congo, where it was recognised in 1976. But that would stigmatise the locals. So, X is named after the nearby river. Contagious, lethal, but curable. What is X? California's Shrey Parikh, 14, didn't just win the Scripps National Spelling Bee, he also spelled a record 32 words in 90 seconds. One of his words, bromocriptine, is a chemical that mimics the activity of which reward and pleasure hormone in...