Oil prices fall further as China lets yuan slide

Crude oil prices continued to fall on Wednesday as China allowed its currency to drop for a second day, triggering concerns over its economic health just as oil production hit multi-year highs. China's yuan hit a four-year low on Wednesday, slipping further a day after authorities devalued it to support its struggling economy. Analysts noted that China's overall currency fall was relatively low by historical standards in foreign exchange markets, but were quick to add that China's