Fill in each blank with the word or phrase that best fits the context.Cowboy or spaceman? A dilemm a for a children's party, perhaps. But also a question for economists, argued Kenneth Boulding, a British economist, in an essay published in 1966. We have run our (41) , he warned...
But also a question for economists, argued Kenneth Boulding, a British economist, in an essay published in 1966. We have run our _41_, he warned, like cowboys on the open grassland: taking and using the world's resources, __42__ that more lies over the horizon. But the Earth is _...