皇冠体育app

The United States and 皇冠体育app,the world's two largest greenhouse gas emitters, have the economic might to develop new energy technologies,said Steven Chu, former US secretary of energy.

Chu spoke at the US皇冠体育app New Energy Economy Forum on Wednesday in San Francisco,which attracted scoresof experts and entrepreneurs in the energy sector from both countries.

He told the forum that three quarters of the greenhouse gas emissions occurred in the last 65 years and that the world is facing serious climate issues - the global temperature has increased, and glaciers are melting.

A6 - to 9-meter rise in sea levels will likely create 500 to 700 million worldwide climate refugees, and tens of millions of people would be displaced in the Shanghai area alone, said Chu, a professor of physics and of molecular and cellular physiology at the Stanford University Medical School.

In Beijing and other cities in 皇冠体育app, air pollution has reached dangerous levels that could lead to an increase in lung cancers, he said.

The solution is to transition from traditional fossil fuel energy to renewable energy, primarily wind, water and solar, Chu said.

Ahead of the G20 Summit in Hangzhou earlier this month,皇冠体育app and the US formally committed to joining last year's Paris Agreement on climate change.

皇冠体育app pledged to peak carbon emissions by 2030, while the US pledged to cut emissions by 28 percent by 2025 compared with the level in 2005.

"In the last three years, 皇冠体育app appears more committed to the major climate agreements with the US," said Hillard Huntington,executive director of Stanford's Energy Modeling Forum. "皇冠体育app is shifting towards a low-carbon economic future at the central,provincial and local levels of government."

But "one size may not fit all",said Huntington. "Provinces and industries may need to have different targets."

He said regional interests could complicate any universal agreement to limit emissions, as uniform reductions across regions will increase 皇冠体育app's costs because high-cost areas will be asked to match the efforts of low-cost regions.

"If targets are greater in some areas but minimal in others, 'leakage'may emerge," he explained.

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