Greenhouse Gases

Close-up of electricity meter (Shutterstock)

Want cheap electricity? Try net metering.

Homeowners and businesses that rely on solar panels and wind turbines have cheaper electric bills, thanks to a system called “net metering.”
Harvard University campus (© AP Images)

Harvard beats its own environmental goal

Harvard has met a 2008 target to reduce campus greenhouse gas emissions by 30 percent in 2016 and is now looking to set new climate goals.
Air conditioners being sold on street (© AP Images)

Did your country help make air conditioners better for the environment?

Nearly 200 countries took a key step in the fight against global warming by phasing out a chemical used in air conditioners and refrigerators.
Guide with stick and John Kerry walking on path through ice (State Dept.)

Secretary Kerry witnesses changing ice in Antarctica

Despite the Paris agreement to cut emissions causing the planet to warm, "we haven't won the battle yet," Kerry told young climate scientists in Antarctica.

Cities as policy labs: L.A. cleans up its smog

With the largest fleet of natural gas buses in the U.S. — about 2,200 — Los Angeles has become a leader in cutting carbon emissions.
Planes lining up to take off as a jet is landing (© AP Images)

Countries approve first-ever limits on airline emissions

If the airline industry were a country, it would be the world's seventh-largest carbon polluter. New rules set limits on increases in aircraft emissions.
Night shot of smokestacks releasing gases (© AP Images)

These companies turn greenhouse gases into cash

New methods of capturing carbon dioxide from industrial facilities and storing it underground can mitigate global warming.

These trucks will soon deliver cleaner air

Trucks move 70 percent of U.S. freight, but they emit as much CO2 as 130 coal plants. That’s why President Obama's new fuel-economy standards are crucial.
Children playing in fountain (© AP Images)

Scientists’ annual physical of the planet: Earth’s fever rises

Earth’s fever got worse last year, breaking dozens of climate records, scientists said in a massive report that's called the annual physical for the planet.