Housing is Ireland’s biggest problem. But Ireland is not alone in this. All over the rich world, people are struggling with housing costs. And all over the world, people are having debates about how to fix housing, and how to make their cities work better.  Few people have a more global view of housing than Alain Bertaud. Bertaud has worked in Algeria, India, China, Indonesia, the US, Vietnam, South Africa, Brazil, Poland, France, Hungary, Russia, probably many more. He retired from his work as the principal urban planner of the World Bank in 1999, and now he’s a senior research…