(CNN)Blistering heat has returned to western Europe, as some countries like France enter into their third wave of the summer with temperatures expected to reach over 100 degrees Fahrenheit (37 degrees Celsius), while more than 80% of the US population will experience temperatures over 90 degrees (32C) within the next week, including in the Mid-Atlantic and Northeast. Around 100 million Americans have been under heat alerts for eight of the past 16 days.
Medellín, Colombia: Grow trees on the streets, not just in parks
When it gets really hot, people with air conditioning might stay indoors, but not everyone has that luxury and — well, who wants to say in all the time?
Vienna: Splish, splash, splosh
Abu Dhabi, United Arab Emirates: Use old cooling techniques and modernize them
Miami: Target heat traps
In a lot of cities, catching the bus can mean a long wait. If it’s really hot, the wait can be all the more punishing — unless, of course, that bus stop has been thoughtfully engineered to include natural shade.