Half a pound of this powder can remove as much CO2 from the air as a tree

"The powder was designed to trap the greenhouse gas in its microscopic pores, then release it when it's ready to be squirreled away someplace where it can't contribute to global warming. In tests, the material was still in fine form after 100 such cycles, according to a study published Wednesday in the journal Nature."

https://www.msn.com/en-us/news/technology/half-a-pound-of-this-powder-can-remove-as-much-co2-from-the-air-as-a-tree-scientists-say/ar-AA1sNevC