Is there a limit to optimism when it comes to climate change?
Climate change requires urgent action — but convincing ourselves to do it is the biggest challenge. "Physical possibility aside, the observant and informed layperson can be forgiven her doubts on the question of political possibility. What should be the message from the climate scientist, the environmental activist, the conscientious politician, the ardent planner – those daunted but committed to pulling out all the stops?" Fiacha Heneghan examines in Aeon magazine the concern.