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Carbon dioxide concentration has increased by more than 10% in just two decades, reports World Meteorological Organization

The U.N. weather agency is reporting that 2023 was the driest year in more than three decades for the world's rivers, as the record-hot year underpinned a drying up of water flows and contributed to prolonged droughts in some places.

The warmest winter on record could have far-reaching effects on everything from wildfire season to erosion, climatologists say, while offering a preview of what the season could resemble in the not-so-distant future unless steps are taken to cut greenhouse gas emissions.

The new chief of the World Meteorological Organization said it looks to her that the rate of human-caused climate change is accelerating and that warming has triggered more Arctic cold outbreaks in North America and Europe, weighing in on two issues that divide climate scientists.