Martin Shkreli, the founder and CEO of Turing Pharmaceuticals who became America's public enemy in September after jacking up the price of a life-saving pill from $13.50 to $750, was arrested by the federal authorities this morning on charges of fraud related to his former position as the co-founder and executive of the hedge fund MSMB Capital.

Google News Lab presents the 15th annual review of the year in search, based on trillions of queries from Google search, Google News, and YouTube.

They say that there's always a new world's oldest person, but what's really new is this world's oldest salamander, who scientists believe might have been born before Abe Lincoln.

We look back at all the tunes, loons, and goons that made 2015 a special year for music online.