Homes Try to Reach Smart Switch
By STEVE LOHR
As technology advances, smart homes face challenges of adoption and economics while the impact on energy consumption remains uncertain.
New Balance of Power
By CLIFFORD KRAUSS
Ed Darack/Science Faction, via Corbis
A Colorado oil well developed by hydraulic fracturing, the blasting of oil and gas out of shale rock with water and chemicals.
Shale drilling has not only transformed the United States from dependent consumer into a robust producer of oil, it is also transforming the price dynamics of the global market.
Europe Looks Offshore for Wind Power
By MARK SCOTT
The Continent’s lead in the small but fast-growing offshore wind industry is a rare bright spot for the region’s renewable power sector.
Recycling Peanuts and Cracker Jack
By KEN BELSON
Recycling at sports stadiums isn’t just for cans and bottles anymore. A growing number of teams are asking fans to also toss leftover food and biodegradable trays and cups, in recycling bins.
Balancing Costs and Competition
By CONRAD DE AENLLE
Alternatives to fossil fuels are becoming even more enticing because of advances in technology that are lowering prices and improving efficiency.
A Mayor’s Green-Power Moonshot
By ANTHONY DePALMA
Mayor Bill Finch of Bridgeport, Conn., came into office with a commitment to sustainability, and he has built the largest fuel-cell generating station in North America.
Catching Waves and Turning Them Into Electricity
By AMY YEE
Ocean waves seem a promising source of renewable energy but remain largely experimental, though companies have developed various designs over the last two decades.
Liquid Batteries for Solar and Wind Power
By HENRY FOUNTAIN
So-called flow batteries can provide energy steadily over time and last much longer than other types of storage.
Troubling Interdependency of Water and Power
By FELICITY BARRINGER
As the climate changes and populations grow, resource managers and environmental advocates warn that scarcity of either water or power could mean shortages and rising costs of both.
Oil Makes a Comeback in Pennsylvania
By ROBERT STRAUSS
In the last decade, mining corporations have sought a new Pennsylvania fuel bonanza in the Marcellus shale fields.
A Challenge From Climate Change Regulations
By CORAL DAVENPORT
Utility companies say that blackouts may be generated as they try to remake the electrical power system.
In Accusing Russian Energy Giant Gazprom, E.U. Begins a Test of Wills
By JAMES KANTER
The move is a challenge to a strategy of Russia’s president by potentially limiting the country’s ability to set prices that favor some over others.
Study Finds Low Cost in Reducing Methane Emissions
By JOHN SCHWARTZ
Researchers say that stopping leaks of methane, a potent greenhouse gas, is a major untapped opportunity for combating climate change.
Obama Uses a Visit to the Everglades to Press His Climate Agenda
By MICHAEL D. SHEAR and CORAL DAVENPORT
The trip was also intended to sharpen a political contrast with Republicans in ways that will help the Democratic Party in the 2016 presidential race.