We DO know how to remove the excess CO2 in our atmosphere
The following article says we have no clue how to remove carbon. But we do!
We already have the mechanism to start doing this immediately. That mechanism is the Earth itself.
We can turn our planet into a huge carbon dioxide processing plant by deploying photosynthesis on a global scale.
How? It’s in the streamlined plan presented in If Earth Could Speak, the book. In less than 100 pages you will see just how easy this is to accomplish.