The crisis in Yemen is an example of how many of the problems facing the world such as overpopulation, water stress, religious conflict, unrepresentative governments, and geopolitical tension are coming together in one country. What happens there may show us a scenario for the future of other countries.

Driving across the spanish province of Navarra which generates about half of its energy from wind, one gets the sense of how far Spain has come towards a low carbon economy and also how much farther it could have gone if not for its fiscal troubles and the current government's other priorities.