The Federal Reserve, European Central Bank and four other central banks lowered interest rates in an unprecedented coordinated effort to ease the economic effects of the worst financial crisis since the Great Depression.

The Fed, ECB, Bank of England, Bank of Canada and Sweden's Riksbank each cut their benchmark rates by half a percentage point. The Bank of Japan, which didn't participate in the move, said it supported the action. Switzerland also took part. Separately, China's central bank lowered its key one-year lending rate by 0.27 percentage point.

Yesterday's decision follows a global meltdown that sent US stock indexes heading for their biggest annual decline since 1937; Japan's benchmark yesterday had the worst drop in two decades.