Buoyed by a surge in retail traders, tech stocks boomed. Then the crash came, wiping out investors and entire businesses. Now, decades later, tech stock fever is again in full swing. Will today’s boom will be a rerun of the 2001 dotcom bust?

NFTs, or non-fungible tokens, and the profits made from them, have caused a stir in the arts world. But now the worlds of sport, entertainment and beyond are sitting up and taking notice