UN warns on warming levels

The world still isn’t close to preventing what leaders call a dangerous level of man-made warming, a new United Nations report says. That’s despite some nations’ recent pledges to cut back on carbon dioxide emissions.

The report looks at the gap between what countries promise to do about carbon pollution and what scientists say needs to be done to prevent temperatures rising another two degrees. The two-degree level is a goal that world leaders set in 2009.

“The time window [for reaching that goal] is closing, closing,” said UN under- secretary for environment Achim Steiner. And the cost of getting to that goal “is increasing, increasing.”