This paper provides a review of the literature on economic growth and the e
nvironment and suggests ways in which it can inform the traditional concern
s of development economics. It contrasts the views of "optimists" and "pess
imists" on the feasibility of continued economic growth. Optimists believe
that increased scarcity of environmental goods will induce adequate conserv
ation responses, including technological innovation, while pessimists belie
ve that these responses will be insufficient without measures to limit the
scale of the global economy. The paper looks at the causes of environmental
degradation; eh:amines the policy approaches implicit in both camps; and s
uggests an approach that draws on elements from both.