sometimes I wonder if a massive worldwide tree planting initiative wouldn't be a better way to capture CO2

Benioff promotes the massive tree planting idea

wsj.com - Occidental plans to suck carbon from the airso it can keep pumping oil

"Many industry experts doubt that direct-air capture can be done economically because the amounts of air that need to be scrubbed are so large. Operating the plants themselves will require massive amounts of energy, which will need to be emission-free to avoid defeating the purpose of the effort, they say.

Occidental executives said it would power the Permian plant with solar energy and additional renewable power from the grid, and it has also looked into potentially powering its plants with mini-nuclear reactors, according to people familiar with the matter. The company also said it is exploring using energy from natural-gas powered plants that capture their own CO2, an early-stages technology in which it has invested."