Emissions reduction

Hydrogen

Is clean hydrogen a climate solution? Depends how it’s made — and used

Clean hydrogen can help decarbonize the world. But only if it’s made in an emissions-free way and used to do the stuff electricity can’t handle.

By Alison F. Takemura . 30 January 2024
Air travel

This Georgia refinery is making low-carbon jet fuel from alcohol

LanzaJet will produce millions of gallons of sustainable aviation fuel this year, just as the Biden administration finalizes rules for lucrative SAF tax credits.

By Maria Gallucci . 25 January 2024
Clean industry

These startups are teaming up to decarbonize cement and concrete

Producing these key materials takes a toll on the climate. A new alliance aims to accelerate the adoption of low-carbon solutions.

By Maria Gallucci . 17 January 2024
Hydrogen

Tax-credit rules leave key 'blue hydrogen' issues unanswered

Environmental watchdogs worry the Biden administration’s proposed rules for hydrogen tax credits may allow fossil gas and biogas to pollute at taxpayer expense.

By Jeff St. John . 12 January 2024
Emissions reduction

Clean electricity is driving down US emissions

A preliminary analysis shows the buildout of renewable energy helped to curb America’s greenhouse gas emissions by 1.9% in 2023.

By Maria Gallucci . 10 January 2024
Electrification

How to get people to kick fossil fuels out of their homes

A new study of 10,000 Americans suggests decarbonization programs should focus on reducing upfront costs and emphasize health, comfort — and even aesthetic benefits.

By Alison F. Takemura . 8 January 2024
Electrification

Yes, it’s possible to electrify a home on just 100 amps

It may require careful planning and efficient appliances like heat pumps, but 100-amp service can be enough to kick fossil fuels out of your home.

By Alison F. Takemura . 7 December 2023
Air travel

Airlines have a big climate problem, and it’s not just CO2 emissions

A Virgin Atlantic flight made waves for flying without fossil fuels. But it was also a test for studying contrails, a hidden cause of global warming.

By Maria Gallucci . 6 December 2023
Air travel

In a first, a major airline will cross the Atlantic without fossil fuels

Virgin Atlantic will use 100% sustainable aviation fuel on a flight from London to New York. It’s an important step toward slashing emissions from planes.

By Maria Gallucci . 27 November 2023
Heat pumps

Heat-pump water heaters are a winner for the climate — and your wallet

The tech costs more than conventional options upfront, but federal tax credits, new 120V models and strong savings have made them more appealing than ever.

By Alison F. Takemura . 22 November 2023