Shale gas and tight oil are giving the US its biggest, most rapid boost in energy production in history. But it will probably prove fleeting.
After 50 years of missions to Mars, scientists are unlocking some of the mysteries surrounding a planet that has captivated mankind for millenniums. Will humans ever leave a boot print on Mars?
With more evidence that China's economy might face a hard landing, much of the momentum for commodities is starting to subside
A poem by William Ward