Carbon

The Western Governors' Association has been looking for ways for its member states to reduce their carbon footprint. One thing they're exploring is how government buildings are built and whether carbon can be stored in concrete.

New research from the U.S. Department of Agriculture shows that trees are losing their ability to absorb carbon, which could worsen global warming in the future.

Global Thermostat unveiled a direct air carbon capture machine near Denver that it said can draw about 1,000 tons of carbon dioxide out of the atmosphere a year.

A direct air capture project set to begin operations this year in Wyoming could soon be the largest facility of its kind in the world. The commercial companies that founded "Project Bison" estimate it will remove five million tons of carbon dioxide from the atmosphere per year by 2030

Boise wants be carbon neutral by 2050. The city’s plan to make that happen relies on participation from the government, businesses and residents.

Janet Yellen is President Joe Biden's pick to be treasury secretary. And she's been a big proponent of a carbon tax.That kind of tax generally refers to…