William Nordhaus and Paul Romer were awarded the 2018 Nobel Prize in economics on Monday for their work on climate change and innovation.
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Two Americans win Nobel Prize in Economics
JONATHAN NACKSTRAND
<p>A portrait of Swedish inventor and scholar Alfred Nobel can be seen on a banner on display at the Nobel Forum in Stockholm, Sweden, prior to a press conference to announce the winner of the 2018 Nobel Prize in Physiology or Medicine at the Karolinska Institute in Stockholm, Sweden, on October 1, 2018. (Photo by Jonathan NACKSTRAND / AFP) (Photo credit should read JONATHAN NACKSTRAND/AFP/Getty Images)</p>
