I love rain. Spending four years in Abu Dhabi seems to do that to you. The same way that it makes you appreciate public transport and summer weather below 40 degrees Celcius. After all, it is a city built in a desert. There is no storm sewer anywhere; there was no need for it. In a suburban sprawl with sparse roads and 20-lane highways, the absence of a drainage system is not something you think about a lot. In Abu Dhabi, the annual rainfall is 42 mm. The annual rainfall in Singapore, a tropi...