I have always believed that the way to achieve great things is often best done one person at a time. Trouble is, we are all human and we struggle to see how any single action can make a big enough difference to matter. That mind-set is why I was impressed by the Japanese Government’s on-going campaign to encourage business people to take up the Okinawan shirt. This famous garment is very like the Hawaiian shirt. The idea? To get businessmen out of their hot suits and ties and into cooler open neck shirts so that the amount of air conditioning can be reduced. The Government is serious about this initiative. Thermostats in government buildings will be set at 28 degrees Celsius from June 1. Now that’s smart. Help individuals combat global warming – and feel more comfortable doing it.