Emissions reduction

Hydrogen

Test shows hydrogen blending slightly reduces gas power plant emissions

The hydrogen revolution isn’t here quite yet — but now we know what happens when a certain type of gas plant burns a small amount of hydrogen.

By Julian Spector . 24 March 2023
Marine transport

Amogy lands $139M to scale ammonia tech for zero-emissions cargo ships

The startup is working to launch an ammonia-powered vessel in New York as the global shipping industry searches for cleaner fuels.

By Maria Gallucci . 22 March 2023
Clean industry

An Arizona plant will pull CO2 from the air and trap it in concrete

The first-of-its-kind initiative by CarbonBuilt, Aircapture and Block-Lite aims to reduce carbon dioxide emissions from concrete production by 70 percent.

By Maria Gallucci . 22 March 2023
Podcast

A rogue geoengineering startup sparks worry

Make Sunsets is sending balloons filled with sulfur dioxide into the stratosphere. Is it performance art — or a new era for geoengineering?

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By Stephen Lacey . 25 min . 15 March 2023
Carbon capture

'High-quality' carbon-removal tech will be focus for new industry group

The Carbon Removal Alliance is all about practical and permanent solutions for capturing CO2 — shady offsets and short-term schemes need not apply.

By Emily Pontecorvo . 10 March 2023
Marine transport

America's pandemic shopping haul arrived on dirty cargo ships

A new report assesses the environmental toll of transporting goods for Walmart, Target, Home Depot and other major U.S. retailers in the frenzied year of 2021.

By Maria Gallucci . 1 March 2023
Air travel

United’s $100M fund to invest in startups making sustainable jet fuel

United Airlines is launching an investment vehicle to support proven producers and emerging developers of sustainable aviation fuel in a bid to curb emissions.

By Maria Gallucci . 21 February 2023
Marine transport

Electrifying US ports could drive sharp cuts in air pollution

A new analysis finds that cities near some of the busiest U.S. ports could see major health benefits if the facilities powered ships and trucks with electricity.

By Maria Gallucci . 14 February 2023
Emissions reduction

Carbon credits could soon help fund distributed clean energy projects

Voluntary carbon offset markets are under fire. WattCarbon CEO McGee Young sees heat pump retrofits, demand response and community solar as a better target.

By Jeff St. John . 13 February 2023
Video

Video: NYC residents have cleaner air after ditching gas stoves

A pilot study at a public-housing complex in the Bronx found that air quality drastically improved in apartments that switched to electric induction stoves.

By Maria Gallucci . 8 February 2023