CNNMoney | Japan stocks enter bear market as oil drops below $28 a barrel CNNMoney The Hang Seng in Hong Kong slumped 3.5%. The crash in crude oil prices keeps getting worse, heightening concerns about the health of the world economy. Oil in the U.S. fell below $28 a barrel for the first time since September 2003, hitting a low of ... MarketsRenewed oil decline shakes Asian markets |