36
Pollution haven hypothesis is connected to the criticism to the composition effect.
It states that the differences of environmental regulations between countries lead the shift
of pollution-intensive manufacturing from developed to developing countries.
30
Since
Pethig modeled that the country with weak environmental policy would export polluting
goods, many studies examined if pollution haven exists.
31
The results
of these studies are
not consistent. Some empirical studies found an evidence of pollution haven, while many
other studies did not find any evidence or found counter evidence.
32
Pollution haven hypothesis infers race to the bottom theory, which refers to the
downward pressure of the stringency of environmental regulations
to attract foreign
investments. On the other hand, there is a hypothesis of the opposite direction, which is
called the race to the top. Regulatory competition tends to lead more stringent
environmental regulations rather than weaker regulations. Vogel
suggested that trade may
generate upward pressure of regulations when countries’ export markets have stringent
30 Cole, Matthew A. "Trade, the pollution haven hypothesis and the environmental
Kuznets curve: examining the linkages."
Ecological Economics
48, no. 1 (2004): 71-81.
31
Pethig, Rüdiger. "Pollution, welfare, and environmental policy in the theory of
comparative advantage."
Journal of Environmental Economics and Management
2, no. 3
(1976): 160-169.
32
Eskeland, Gunnar S., and Ann E. Harrison. "Moving to greener pastures?
Multinationals and the pollution haven hypothesis."
Journal of Development Economics
70, no. 1 (2003): 1-23.; Cole, Matthew A. "Trade, the pollution haven hypothesis and the
environmental Kuznets curve: examining the linkages." Ecological economics 48, no. 1
(2004): 71-81.; Millimet, Daniel L., and Jayjit Roy. "Empirical tests of the pollution
haven hypothesis when environmental regulation is endogenous." Journal
of Applied
Econometrics (2015).;
Dong, Baomin, Jiong Gong, and Xin Zhao. "FDI and
environmental regulation: pollution haven or a race to the top?."
Journal of Regulatory
Economics
41, no. 2 (2012): 216-237.; Kearsley, Aaron, and Mary Riddel. "A further
inquiry into the Pollution Haven Hypothesis and the Environmental Kuznets Curve."
Ecological Economics
69, no. 4 (2010): 905-919.
37
regulations.
33
Empirical studies show little evidence of the race to the bottom.
34
Rather,
their result supported the pressure for the race to the top.
35
Previous literature on trade and the environment do
not agree on any specific
direction of effect of international trade on the environment. Trade can improve the
environment by driving technology innovation and the change of industrial structure, and
by ratcheting up the stringency of environmental regulations. On the other hand, trade
can harm the environment by increasing the
scale of pollution, transferring polluting
industry from developed to developing countries, and driving downward pressure of
environmental regulations.
The rise of renewable energy suggests the positive side of international trade.
Increasing international trade of renewable energy products have generated technology
innovations, which enabled dramatic cost-down of some products. Moreover,
increasing
number of countries adopting renewable energy policies support the race to the top rather
than the race to the bottom. However, the other side of renewable energy trade, the rise of
protectionist policies, needs different perspective since it is not well understood by trade
and the environment literature.
33
Vogel, David.
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