It is likely many people are unaware of vertical forests and their main function. Essentially, the goal of a vertical forest is to make what is essentially an open tower where you have nothing but trees and other plants. By introducing this into cities, you’re able to soak up a lot of the CO2 in the atmosphere. The more of them to have, the more you’ll be able to capture. This has been proposed heavily for places like China, where there is a massive amount of pollution. It can get so bad here that you’re unable to see several blocks away in an open city plan. To avoid this, especially in the most populated cities, these forests will be present.