Essentials of Economics

Krugman, Paul; Wells, Robin

4th ed.

New York: Worth Publishers, Macmillan Learning, 2017

p. 534

In 2010, the Dodd-Frank bill revised financial regulation in an attempt to prevent repeats of the 2008 crisis.

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p. 473

Most important, there has been a drastic improvement in fuel efficiency, with modern planes using less than a third as much fuel per passenger-mile than their ancestors.

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