What with all the global urban forest initiatives underway, the single most important question we must ask ourselves in 2017 is “do we know how to design and grow an urban forest?”

The greatest challenge to humanity at present is unquestionably climate change. The top of the mitigation list in urban environments is the urban heat island effect (UHIE). If humans are going to survive, into the future, in highly urbanised areas, the UHIE must be set as priority one. The priority…