Reduced agricultural production, water scarcity, rising sea levels and other adverse effects of climate change could cause up to 216 million people to migrate within their own countries by 2050.
Weather-related disasters have skyrocketed over the past half-century, causing far more damage even as better warning systems have meant fewer deaths, the UN said.
A study carried out by the International Center of Tropical Agriculture (CIAT) shows that N2O emissions can be significantly reduced by providing healthy pasture for livestock production.
As important as a global accord is, the most influential actors on climate change have been cities and businesses, and leaders in both groups made it clear that they will not wait for an agreement that, if it comes together, won't even take full effect until 2020.
Despite the horrendous terrorist attacks in Paris on Friday, French officials have vowed to move forward with a major climate conference set to begin on Nov. 30.
As the world prepares for the most important global climate summit yet in Paris later this month, news from Greenland could add urgency to the negotiations. Another major glacier appears to have begun a rapid retreat into a deep underwater basin, a troubling sign.
Earth has heated up by 1 degree Celsius (1.6 F), Britain's weather office said Monday, as greenhouse gases hit record levels just weeks before a crucial climate summit in Paris.
