Who's responsible for solving the world's problems—me, or The System?

When it comes to global problems like climate change, it can be easy to feel as though your own individual efforts to stop it are too small to make a difference. But then when you consider the big players whose efforts could make a difference—the corporations, the political parties—making them do the right thing just seems too daunting and complicated a task. What to do when individual efforts seem too small to matter, but structural change seems too big to effect? This week, the authors of a new book talk about taking a middle path.