Currencies

AP Explains: Behind Libra, Facebook's new digital currency

Facebook is unveiling a digital currency called Libra as the company seeks to make its ads more valuable by enabling smoother transactions and payments online, particularly among those without credit cards or bank accounts.

Correction: Bitcoin-Carbon Footprint story

The virtual currency bitcoin is responsible for the same amount of carbon dioxide emissions as a city like Las Vegas or Hamburg and efforts to reduce its climate footprint should be considered, researchers said Thursday.