As more investors pile money into exchange-traded funds, they are finding out that some of them are not what they're cracked up to be.

World energy use will rise rapidly over the next 20 years, increasing costs and greenhouse gases unless a deal is reached to curb carbon dioxide emissions, the International Energy Agency (IEA) said on Tuesday.

The world is closer to a peak in oil supply than International Energy Agency estimates admit, UK newspaper The Guardian reports, citing an unidentified IEA "whistleblower."

Oil prices fell Tuesday as the dollar firmed and energy companies began restoring offshore operations disrupted by Tropical Storm Ida.

China will lift gasoline and diesel prices by around 7 percent from 1600 GMT on Monday to reflect the rising cost of crude oil, taking pump prices to their highest ever, a government official told Reuters on Monday.

Ida weakened to a tropical storm Monday as it churned toward oil and gas facilities in the Gulf of Mexico and was forecast to hit the U.S. Gulf Coast early Tuesday between Louisiana and Florida.

Oil prices rose more than 2 percent Monday after Tropical Storm Ida forced the shut in of U.S. oil and gas production, helping to support prices.

Oil prices fell nearly 3 percent on Friday after data showed the U.S. jobless rate jumped to a 26-1/2-year high of 10.2 percent in October, raising concerns about a potential rebound in fuel demand.

The United States has set preliminary anti-dumping duties ranging from 36.53 percent to 99.14 percent on Chinese-made steel pipe used in wells to extract oil from the earth, a source familiar with the situation said on Thursday.

Oil prices fell 1 percent on Thursday, as doubts about the pace of economic recovery dented optimism toward a rebound in fuel demand.

Honda Motor aims to improve its cost structure to be able to break even in Japan using just 70 percent of its capacity to build cars, a top official at Japan's second-biggest automaker said on Wednesday.

Oil prices rose 1 percent on Wednesday, extending the previous session's gain, after a U.S. government report showed a surprise decline in crude stocks in the world's largest consumer.

Toyota Motor said on Wednesday it was pulling out of Formula One racing.

The United Auto Workers union had given local unions until Monday to complete voting. But a person briefed on the voting said Saturday that the contract changes have been rejected by large margins.

Oil rose nearly 2 percent Tuesday after data showed U.S. factory orders in September expanded at a quicker pace than expected, signaling potential for more fuel demand in the world's biggest energy consumer.