TOKYO, Japan (AFP) — Bitcoin plunged 20 percent to a three-month low on Tuesday, its latest sharp loss following a series of setbacks for the cryptocurrency that, with a collapse across global mainstream markets adding to the selling. The virtual currency fell to $6,190 for the first time since mid-November, according to Bloomberg News, and represents the latest hammering for a unit that saw a stratospheric 26-fold rise last year. Tuesday’s collapse comes just six […]