Photo taken on Dec. 12, 2015 shows the final conference at the COP21, in Le Bourget, Paris, Dec 12, 2015.[Photo/Xinhua]

The French head of state also promised that "France will put everything in place to implement the agreement."

"This agreement, we had been waiting for a long time, for 40 years," Hollande said.

Obama called the agreement "a turning point for the world," saying it has created an "enduring framework" for future efforts.

"This agreement sends a powerful signal that the world is firmly committed to a low-carbon future," said Obama in a televised speech. "This agreement represents the best chance we've had to save the one planet that we've got."

The Paris agreement runs to 32 pages with 29 articles, including objective, mitigation, adaptation, loss and damage, finance, technology development and transfer, capacity building, and transparency of action and support.

On the basis of equity and common but differentiated responsibilities and respective capabilities, the Paris agreement aims to hold global average temperature rise to below 2 degrees Celsius above pre-industrial levels and strives for limiting the temperature increase to 1.5 degrees Celsius above pre-industrial levels.

Taking into account of the needs and priorities of developing countries, the agreement also eyes financing support of 100 billion U.S. dollars a year by developed countries to developing countries from 2020.