【正文】
anetary scale, humans now assert unchallenged dominion over all living things. We have leveled forests, ploughed up the great grasslands and transformed the continents to serve our demands. The productive capacity of a major part of the planet39。s terrestrial surface is now dedicated to satisfying our demands for food, fuel and fiber, whilst the oceans are trawled around the clock for the fishy fats and proteins our brains and bodies demand. Human beings have, therefore, clearly been an unprecedented evolutionary success sto