A way to reduce CO2 in the air is promoting growth of plants, trees, and so on. This can be done for example, by sending fresh water from Obi river, under mountains at its West, to replenish the Caspian Sea, today nearly a desert. This will help controlling salt content of Arctic Ocean, the detour can be closed and opened like a tap.
Sending desalinated water above Northern Sahara mountains, in Lybia, Tunisia, Algiers will induce rainfall and plant growth by reactivating inner dry lakes.
The overall rainfall in region was connected to the surface of Tethys Ocean remains, the larger the water surface, the higher the rainfall.
A virtue circle will result form adding freshwater to areas currently under extreme aridity.
Selling firewood in African areas where today many women have to walk kilometers to find wood for cooking, this creates also deserts, may help fix CO2 from vegetal cover increase.
Goats, sheep, are desert makers, it are better kept inside fences, fodder and water brought to place.
The catastrophic vicious circle of cutting plants for firewood and the effects of goats is evident in the Canary Islands of Lanzarote, where the conquerors had to open their way with bowie knifes, so thick was the vegetation, and the effect of goats in Fuertventura, that are those with highest milk output in the world, but destroyed vegetation.