Prices & supplies – June 26

10 tough questions on oil and gas prices
Skeptics doubt Saudi Arabia can boost oil supply
Saudis or speculators? Oil-price finger-pointing
China fuel price hike as much politics as policy
Oil rebounds after fall on China fuel price hike

The world’s biggest pollution factory

At the root of many of China’s air-quality problems is its heavy dependence on relatively high-sulfur, low-quality coal for everything from electricity generation and industrial production to cooking and space heating in the home. China relies on coal for almost 75% of its energy needs. In fact, each year, China consumes more coal than Japan, the United Kingdom, and the United States combined.