Economists William Nordhaus, Paul Romer wins Nobel Prize

The 2018 Nobel Prize for economics was awarded to American economists William Nordhaus and Paul Romer their work on understanding how economies can grow sustainability.

"This year's Laureates have designed methods for addressing some of our time's most basic and pressing questions about how we create long-term sustained and sustainable economic growth," the Royal Swedish Academy of Sciences said in a statement.

Nordhaus developed an influential model that examines the consequences of climate policy interventions, including carbon taxes, on the global economy.

His work on climate was recognized the same day that a key UN panel warned that governments around the world must take "rapid, far-reaching and unprecedented changes" to avoid disastrous levels of global warming.

Romer, a former chief economist at the World Bank  has shown that economic forces govern the willingness of companies to innovate. The concept is the foundation of what is now called "endogenous growth theory," which states that new ideas and technology help drive economic activity.

"Many people think that protecting the environment will be so costly and so hard that they just want to ignore the problem," he said via phone. "I hope the prize today could help everyone see that humans are capable of amazing accomplishments."

Justin Wolfers, an economist at the University of Michigan, said on Twitter that the work of both winners showed "smart government policies" are "essential if the economy is to deliver good outcomes in the long run."

"It's all about market failure," he added. "Left alone, markets will generate too much pollution (Nordhaus) and too few ideas (Romer)."