Global warming is sharply raising the risk of 'unprecedented' events

Around the world, global warming is making unprecedented weather and climate events far more likely to occur, with the planet now teetering on the edge of a new era of routinely damaging global warming-related extremes, a new study found. 
The study, published Monday in Proceedings of the National Academy of Sciences, found that in addition to making extreme events more likely across broad swaths of the globe, climate change is also making such events more severe.
The study is rooted in an