The Great Green Wall

The $8-billion project intends to restore 100 million hectares of degraded land by 2030, which would create 350,000 rural jobs and absorb 250 million tons of CO2 from the atmosphere.[1]

Ecosia reports having planted 5,531,042+ trees as of 25 July 2018, mostly in Burkina Faso,[19] though no other source for this can be found. In September 2017, the BBC reported that progress was best in Senegal.[20] As of March 2019, 15% of the wall is complete with significant gains made in Nigeria, Senegal and Ethiopia.[21] In Senegal, over 11 million trees had been planted. Nigeria has restored 12 million acres of degraded land and Ethiopia has reclaimed 37 million acres.[1]