U.N. Report Says Global Warming Is Nearing Limits

A new report on global warming indicates that Earth's climate is heating up rapidly. It predicts that within the next two decades, temperatures will exceed the levels that world leaders aim to prevent. The report forecasts higher temperatures for the 21st century compared to the predictions made in 2013.

What is the significance of the report's findings on global warming?

What timeframe does the report suggest for when temperatures will likely exceed the levels world leaders are trying to prevent?