Most of the carbon disturbed by trawls is unreactive and difficult to convert to CO₂.

Airlines are promising net-zero emissions by 2050. To get there, they’re experimenting with used cooking oil, ag waste and corn ethanol in their fuel tanks. But that alone won’t be enough.

Millions of dollars have gone into California’s forest carbon offset program – with little new carbon storage to show for it, a new study suggests.

‘Blue carbon’ habitats can store a lot of carbon – but not reliably enough to offset emissions.

More carbon dioxide in the air doesn’t necessarily mean more growth for trees, and the increasing risk of wildfires and drought has major consequences, as an interactive map shows.

Plan to cut emissions quickly, use offsets sparingly and set broader goals for improving society.

The dust has settled on COP26 and one of the summit’s few achievements looks decidedly less impressive.

New research shows that universities could offset carbon by changing some of their land to woodlands and meadows.

Removing carbon from the atmosphere raises political questions that should be addressed by democratic institutions.