Last week, I returned from a trip to Canada with a stopover at night in Tokyo. It was almost 30 degrees C. On the plane, I turned on the Japanese news and weather and the mildly panicked weatherman was predicting 40 degrees the next day in Hokkaido, famous for its very mild climate. While it did not quite reach 40C there, nevertheless, the heat was record-breaking.
Heatwaves are increasingly commo...
