Commentary: What’s with all the extreme weather?

People walk in the flooded road after record downpours in Zhengzhou, in central China’s Henan province, on July 20. (Featurechina/ROPI/Zuma Press/TNS)

Reading the news over the past month — or maybe just stepping outside — you could get the sense that something has gone wrong with the weather. One heat wave after another has struck the West Coast, which, as a result, is now on fire. Western Europe has been deluged by rain, killing hundreds. Across Asia, from Japan to Turkey, temperature records have been falling like dominoes, and, most recently, several cities in China have been flooded by heavy rainfall.