Interest in natural gas is growing for political, environmental, and economic reasons. But the industry faces challenges to adding pipelines, increasing international LNG trade, and exploiting newly …

Though shifts in demand and reduced production by some major producers have influenced oil prices, investor behavior is also increasing market volatility.

The Obama administration says its 2009 stimulus package saved jobs and boosted growth, but Republicans and some economists worry it dampened consumer and business spending and added to long-term debt.

The handoff of foreign policy responsibility from one U.S. presidential administration to another has proven risky in many cases. The next transition occurs at a time of extraordinary global challeng…