Carbon capture

A new method quickly converts carbon dioxide into solid carbon, which can be stored indefinitely or turned into useful materials. The technology works by bubbling CO2 up through a tube of liquid metal, and could be used at the source of emissions.

Carbon dioxide may hog headlines as a climate change villain, but methane is a far more potent greenhouse gas. MIT has now demonstrated a new way to remove methane from the air, even at low concentrations, with a common clay used to make cat litter.

The largest XPrize competition ever conducted has given out its first prize money, with 23 student teams receiving cash injections to further technologies that take aim at the problem of mounting carbon dioxide in the atmosphere.

A new initiative from the US Department of Energy makes carbon capture and storage technologies a key pillar in its plan to tackle climate change, aiming to drive down the cost and foster innovations that allow for storage on a mass scale by 2050.

Concrete is the most widely used building material in the world, but it comes at a huge environmental cost. Engineers in Japan have developed a new technique to make concrete by recycling waste concrete and combining it with captured carbon dioxide.

A company at the cutting edge of carbon capture technology has outlined its vision to use Australia's vast, open spaces and abundant sunlight to power millions of modular systems that would collect millions of tons of CO2 each year.

Carbon dioxide in the atmosphere attracts most of the attention in environmental concerns, but much of that ends up in oceans, making them more acidic. Now scientists have created nanojars that can easily capture this and other pollutants from water.

Researchers have proposed a fascinating way to eliminate CO2 in the notoriously hard-to-abate shipping sector. The ships would use existing marine fuels, run through solid oxide fuel cells, and all CO2 would be stored back in a partitioned fuel tank.

Blue hydrogen isn't a step forward for the climate, says a new report out of Cornell and Stanford Universities. Indeed, it's worse than simply burning gas or coal in many applications – so it's not an acceptable transition phase in the race to zero.

An ambitious Israeli startup claims it can pull carbon dioxide out of the air vastly cheaper than anyone else, using massive high-altitude balloons to take advantage of stratospheric temperatures and freeze CO2 out of the air with minimal energy.

A new study out of the University of Sheffield makes a case for a geoengineering technique known as enhanced rock weathering, which essentially involves supercharging soil’s ability to remove CO2 from the atmosphere by sprinkling it with rock dust.

Carbon dioxide is an all too common waste product of industry, belched into the air from smokestacks. Now, researchers have developed a new type of fluorinated membrane that can selectively filter CO2 out of flue gas at the point of release.