In this Friday, Dec. 8, 2017, file photo, a man uses a Bitcoin ATM in Hong Kong. Bitcoin is the world's most popular virtual currency, but multitudes of alternatives are springing up around the world. (AP/Kin Cheung)

Cryptocurrency: With Inequality Rising, Citizens Seek Alternative Economies

Cryptocurrencies are helping recipients of foreign aid by allowing them to exchange peer-to-peer, rather than having to transact through corruption-prone bureaucrats.