THE back-up plan for saving the world is no longer a joke. This week, a major scientific institution has published a comprehensive review of possible ways to engineer the climate to reverse global warming.
The UK ‘s review of geoengineering will make it difficult for governments to ignore the issue. It says that while reducing emissions of greenhouse gases “absolutely” must remain a priority, there is a significant chance that this will not be enough to stave off global warming of 2 °C. “My guess would be that there is a 50-50 chance that we can achieve something with emissions reductions,” says …
