James Lovelock

If on a hot day you compare the temperature of a slate roof with that of a nearby black conifer tree, you would find the roof is 40 degrees hotter than the tree. The tree cools itself by evaporating water

We have so far been protected by the planetary system I call Gaia which cools the Earth's surface

There would be a runaway greenhouse effect. We see evidence of this process around us all the time. If on a hot day you compare the temperature of a slate roof with that of a nearby black conifer tree, you would find the roof is 40 degrees hotter than the tree. The tree cools itself by evaporating water.