International

"For a variety of reasons -- whether it be mitigating climate change, enhancing security, increasing economic incentives or even improving the health of indoor living -- countries around the world have been investing in ways to boost energy efficiency. Worldwide, that market of cutting back on energy waste is growing and is now worth at least $310 billion, reports the International Energy Agency."

"The share-price boom at U.S. energy firms has gone bust, due to slumping global growth and tumbling crude prices."

"Here’s to the continual intellectual tussles that produce technological leaps like the super-efficient and durable LED light bulbs that are increasingly displacing incandescent and fluorescent bulbs (and sooty kerosene lamps) and garnered a Nobel Prize for three physicists on Tuesday."

"OSLO --  Governments are failing to meet goals to protect animals and plants set out in a biodiversity plan for 2020 that also aims to increase food supplies and slow climate change, a U.N. report showed on Monday."

"Scientists have devised a new map of the Earth's seafloor using satellite data, revealing massive underwater scars and thousands of previously uncharted sea mountains residing in some of the deepest, most remote reaches of the world's oceans."

"Research published Sunday concluded that the upper 2,300 feet of the Southern Hemisphere’s oceans may have warmed twice as quickly after 1970 than had previously been thought."

"Oil could continue its deep slide, possibly dipping into bear market territory, under new pressure from Saudi Arabia's decision to defend market share, as opposed to cutting production to battle falling prices."

"The waters surrounding Antarctica have been recently undergoing changes that were similar to what occurred 14,000 years ago, which led to a rapid melting of the Antarctic Ice Sheet and a sudden 10-13 foot rise in global sea level."

"They never actually broke bread together, but President Obama and Indian Prime Minister Narendra Modi took a small step toward warmer relations Tuesday when they agreed to work together on climate change, one of the most contentious issues facing the countries."

Emissions from power plants, refineries and other industrial facilities in the United States increased in 2013, up 20 million metric tons -- or 0.6 percent -- over the previous year, according to a new report from the Environmental Protection Agency released Tuesday."