What concerns you most about the world, and what are you doing about your concerns?

There are so many different concerns that I’m not sure which is the biggest one. At present, because of the enormous power of humankind, maybe the biggest concern of all is human blindness and stupidity. We’re an extremely wise species in so many ways but when it comes to making important decisions we have this tendency sometimes to make these terrible mistakes, and we are now in a situation when we just don’t have much room for error. As we gain more and more power, the consequences of making a stupid choice are catastrophic for us and for the entire ecological system. So this is a great cause for concern.

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