“Since about 1850, twice as much atmospheric carbon dioxide has derived from farming practices as from the burning of fossil fuels (the… — Judith D. Schwartz Copy Share Image
“Thus human beings are now carrying out a large scale geophysical experiment of a kind that could not have happened in the… — Bill McKibben Copy Share Image
Thus, human beings are now carrying out a large scale geophysical experiment of the kind that could not have happened in the… — Roger Revelle Copy Share Image
