There are two big challenges. 1. Individually anything one person does is meaningless. Collectively, action or inaction across the whole globe could be vital (or disastrous). Is Scara's outlook just more honest? Those who talk the environmental talk, do a bit of recycling but munch beef regularly, fly in planes, and consume lots of new goods...are they any better for their willing intentions?
I truly think we need a global manifesto on climate change. Something simple, that sets out how we should all be living. And that sets a president for governments, which the young can hold governments to. It is the young who will pick up the pieces. 2. Humans will never find it easy to act on things that have 100 year+ outcomes. We have to help people make changes. At the moment we lack clarity.