Before I started this blog, I had a rough idea what geoengineering was, but without detailed knowledge on particular methods. In the course of the last three month I read and wrote about cloud seeding by spaying seawater, planting trees, stratospheric sulphur injections, ocean fertilisation and space sunshades. These are all very different methods with different side effects. However, they have two thing in common: The aim to change the environment and the climate on a global scale. Moreover, further research is needed, to be certain what impacts these methods will have. I am not sure we will ever know these impacts for sure if we do not try it out. But is that the best way? How much risk are we willing to take? It is obvious, that geoengineering alone cannot be the solution of our problems. We need to reduce our greenhouse gas emissions on any account. There is no way around that! Something has to be done, but I think we should be very cautious with those methods that hold the greatest uncertainties.
What do you think? Is there a particular method you think could work or is geoengineering not the right way to deal with our problems? I personally think, some of the less radical methods (e.g. seawater spraying to form clouds) could help to mitigate climate change, but first we really do need to know a little bit more about the consequences. However, on a long term only reducing emissions will help, there is no way around that!
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