Terraforming times reduced by half, except for fungus planting or removal. Enables advances terraforming provided by Ecological Engineering and Environmental Economics but without lifting the mineral and energy restrictions that those technologies do, so if you don't have them yet boreholes will give you just 2 minerals and 2 energy, instead of 6 of both.
I shall not confront Planet as an enemy, but shall accept its mysteries as gifts to be cherished. Nor shall I crudely seek to peel the layers away like the skin from an onion. Instead I shall gather them together as the tree gathers the breeze. The wind shall blow and I shall bend. The sky shall open and I shall drink my fill.