To wean itself off Russian natural gas, Europe has found new sources of energy, including imports from the United States. But high costs are straining the economy.

A court ruling requires the British government to consider the potential climate impact of the oil and gas produced in the North Sea.

The energy giant is spending nearly $50 billion to expand the Tengiz oil field, allowing it to pump one million barrels a day.

Periods of low sun and wind, a weather pattern known as a Dunkelflaute, can increase electricity prices and stoke political tensions.