La Nina climate cycle may reemerge in 2021: UN

The weather phenomenon La Nina could resurface before the end of 2021, after petering out four months ago, the UN said Thursday, predicting above-average temperatures despite its generally cooling influence.

Extreme sea levels to become much more common

Global warming will cause extreme sea levels to occur almost every year by the end of the century, impacting major coastlines worldwide, according to new research from an international team of scientists.

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