What If We Terraformed the Sahara Desert? | The Astonishing Transformation of Earth

In an effort to fight climate change, the Sahara Desert could be going green... literally. Plans are being made to terraform the entire Sahara desert; changing it from a dry, barren landscape to a lush green space.

If successful, the transformation could remove 7.6 billion tons of atmospheric carbon yearly. How could we change the nature of such a vast, isolated landscape?