Water treatment is expensive. It uses a lot of energy and produces its own waste that gets disposed of at a hefty price.

Production of carbon dioxide from reaction of citric acid and baking soda ...

Inside the hall, Mr Chan points out two enormous balloons overhead, which together hold a single tonne of CO2. That captured CO2 is then mixed with fresh water, in an adjacent tower.

Energy Dome uses carbon dioxide held in a huge balloon, the “dome” in the company’s name, as a kind of battery. During the day, electricity from the local grid, some produced by nearby ...

Startups like Climeworks have proven that it’s possible to suck excess CO2 from the air and store it underground to fight climate change. But the technology is still too expensive to be viable ...

Emissions of carbon dioxide – the gas most responsible for global warming – continued to rise in Earth's atmosphere in 2022, federal scientists announced recently. Carbon dioxide (CO2 ...