Forbes says that human sacrifice affects the climate.
climate change is happening, it’s a problem and we ought to do something about it. What we ought to do about it is is impose that carbon tax: the $80 per tonne CO2 (actually, CO2-e) that the Stern Review recommended and then let the market work it out. In my native UK we already pay green taxes of about this amount: all we need to do is shift around the taxes we already pay.
The Aztecs agreed.