Alan Greenspan, a prominent economist, has passed away at the age of 100. He held significant influence over US monetary policy during his tenure as chairman of the Federal Reserve. Greenspan served under four presidents, spanning five terms in the position.

Details of his life and career are available from various news sources, including NBC News. His wife, Andrea Mitchell, a correspondent for NBC News, confirmed his passing on Monday.

Further information about Greenspan's life and accomplishments can be found through NBC 5 Dallas-Fort Worth and other news outlets.