The world's largest private-sector coal company, Peabody Energy, is preparing to cut 250 jobs across the United States.
The demonstrators were mostly peaceful in advance of the two-day gathering of world leaders.
A federal court cleared ex-VP David Rainey of lying about the amount of oil leaking in the 2010 Gulf of Mexico disaster.
The report contradicts claims made by environmentalists that injecting water into natural gas wells leads to groundwater contamination.
OPEC oil ministers are expected to hold the line on oil production at this week's summit in Vienna.
Scientists and economists this week proposed a Global Apollo Program to drive down costs of renewable energy and make it cheaper than fossil fuels.
A report Tuesday found countries and global financial institutions are backing billions in coal power plants and mines, despite calls to cut climate-change emissions.
“The alternative is to pursue a patchwork of regulations that ... could arbitrarily ban energy exploration and damage the state’s largest industry, largest employers and largest taxpayers.”
The Swiss-made aircraft will be the first plane to go around the world using only solar power.
Norwegian policymakers this week recommended the country's $896 billion sovereign wealth fund exclude coal industry companies.
U.S. energy officials say major advancements in turbine technologies and falling wind energy costs will help wind power to grow six-fold by 2050.
Saudi Arabia will enter the next oil cartel meeting in a position of strength, touting its policy of keeping production levels high.
At U.S. oil companies' annual meetings Wednesday, progressive shareholders will vote on a handful of environmentally focused resolutions.
"Under current conditions, it seems unlikely that the OPEC production ceiling will change," Iranian Oil Minister Bijan Zanganeh says.
Federal regulators on Friday finalized a rule to limit emissions from oil refineries and factories that are largely exempt from the Clean Air Act.
The Ohio-based coal mining giant is reportedly set to announce layoffs of around 1,800 workers Friday at mines in West Virginia and Ohio.
An oil spill this week off Santa Barbara, California, points to broader problems with the safety of U.S. oil pipeline infrastructure and regulations.
As much as 2,500 barrels (105,000 gallons) of crude oil was released in Tuesday's rupture.
The price rises came after a session on Tuesday that saw oil slide over 3 percent on a dollar rally and concerns of a building glut.
California Gov. Jerry Brown signed an agreement with other states and countries to slash greenhouse gas emissions and tackle global warming, ahead of a UN-led summit in Paris.
China banks on alternative-energy vehicles to abate pollution. Next step: Incentives for heavily polluting industries to rein in use of fossil fuels.
Buffett's Berkshire Hathaway Inc. has invested billions in clean energy. But now it's opposing a Nevada proposal to boost rooftop solar projects.
The U.S. investment bank cut its long-term oil price forecast and advised investors to sell shares in BP Plc and Norway's Statoil.
Saudi Arabia-led OPEC decided at a meeting in November to maintain output and keep global markets amply supplied.
U.S. energy scientists said Friday America's power plant emissions could rise by 2040 without a policy like Obama's Clean Power Plan.
The nation's largest electricity company also agreed to pay $102 million in criminal fines and fees for environmental conservation projects.
Brazilian investigators believe 6.19 billion reais ($2.1 billion) in bribes were moved in a corruption scheme involving state-run oil firm Petroleo Brasileiro SA (PETR4.SA), prosecutor Deltan Dallagnol said on Thursday.
One of the world’s top crude producers is showing no signs of cutting back output despite low oil prices.
A Louisiana firm will be the first since the 2010 BP oil spill disaster to drill for the same oil and gas reserves BP was after.
The Anglo-Dutch energy giant is one step closer to drilling in the Alaskan Arctic after the Obama administration conditionally approved its plans this week.