There were lots of great signs at the People’s Climate March yesterday. But for RBC readers, I’ll showcase this one:
I don’t know who’s responsible for popularizing the term “carbon pollution.” But it’s the rare political catchphrase that’s both tremendously effective and perfectly accurate. There was plenty of idealism (and of course a bit of wackiness) at the march. But at root, the core message is Micro 101:
Negative externalities should be taxed. And as a—poor, but politically necessary—second choice, they should be regulated.