Daniel Yildirim, along with three other 'valve turners', shut down a pipeline in Minnesota early this month. Listen in as we chat about the who, the what, the when and especially the why of this direct action against climate change. How can this act help all of us come to understand the implications of climate change? Does the 'necessity defense' apply in this case? Does the enormity and immediacy of the threat justify breaking the law? We discuss.