Climate Change

Solar panels in circle around tower in middle of plain (Courtesy of SolarReserve)

Salting away renewable energy for future use

Molten salt could be the key to unlocking a future full of renewable energy. During peak times the salt stores solar power that can be saved and used later.
Two people in canoe on lake in foreground; forest with autumn foliage in background (© AP Images)

Hundreds of U.S. businesses voice support for climate agreement

Over 300 U.S. businesses, many from the Fortune 500, signed a statement renewing private-sector support for the Paris agreement on climate change.
Secretary of State John Kerry speaking at podium (© AP Images)

Secretary Kerry: ‘We don’t get a second chance’ on climate

"What we do right now, today, matters," Kerry told delegates at a climate change summit developing rules to implement the Paris climate agreement.
Frog poking its head out from clump of Azolla ferns (Nigel Cattlin/Alamy Stock Photo)

Can this tiny fern save the world — again?

Scientists are trying to learn more about Azolla, a plant that might help reduce man-made climate change — but there are some challenges.
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.
Solar panels lining rural road (© AP Images)

Tech giants Apple and Google get into the solar business

This year, Apple applied to sell excess electricity from new renewable energy installations. Google, Amazon and Walmart started similar programs.
Sun shining throught solar panels (Shutterstock)

‘Grid parity’ is key to stopping climate change. Here’s why.

What does grid parity have to do with climate change? Everything. As the cost of renewable energy drops, so does the dependence on traditional energy.
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.
Person riding bike with city skyline in background (© AP Images)

Cities as policy labs: Portland’s bicycle experiment

With bicycle boulevards, 'sharrows' and more than 500 kilometers of bikeways, Portland, Oregon, has become one of the greenest cities in the U.S.