The young president of small Central American nation El Salvador leapt to worldwide fame this week after his country became the first in the world to adopt bitcoin as legal tender, but Nayib Bukele is no stranger to controversy. Cryptocurrency fans across the globe celebrated when his bill was swiftly approved by lawmakers on Wednesday, and when the 39-year-old leader followed up with a plan to mine energy from volcanoes to power the massive data centers needed to mint the digital currency. The move did not escape scrutiny. The International Monetary Fund quickly flagged economic and legal risks to the unprecedented ... (full story)