Hard Numbers: "Butcher of Bosnia" conviction upheld, Rome's pizza vending machine, how rich Americans avoid taxes, global vaccine tracker

8,000: A UN tribunal has upheld the conviction of former Bosnian Serb military leader Ratko Mladic, who was given a life sentence for overseeing the mass murder of 8,000 Muslim men and boys in Srebrenica, and other war crimes committed during the the war in Bosnia in the early 1990s. Mladic, known as the "Butcher of Bosnia," was a fugitive for 16 years before his capture in 2011.

1: The city of Rome, where pizza is sacrosanct, has gotten its first pizza vending machine. Massimo Bucolo, a pizza entrepreneur, says that he hopes Romans will warm to the idea of a device that can prepare pizza in mere minutes. But so far, the reaction amongst pizza-loving Italians has been underwhelming.

25: The 25 richest Americans have employed complex strategies to avoid paying taxes while their collective wealth rose a whopping $401 billion from 2014 to 2018, according to an explosive new ProPublica investigation. The outlet got its hands on a trove of documents outlining the reported incomes and taxes paid by the mega wealthy, including Warren Buffett, Elon Musk and Jeff Bezos.

2.15 billion: More than 2.15 billion COVID vaccine doses have been administered across the globe, accounting for about 14 percent of the world's population. At the current rate, it would take another year to reach global immunity, according to Bloomberg.