Denmark is set to impose the world’s first emissions tax on livestock beginning in 2030, targeting greenhouse gases emitted by the country’s cows, pigs and sheep.

       According to the plan, farmers would pay about $43 per metric ton of carbon dioxide equivalent produced by their livestock. That rate would increase to about $108 in 2035. The levies would be partially offset by a 60 percent tax deduction, rendering them closer to $17 per metric ton in 2030 and $43 in 2035, according to the Danish government, which unveiled the proposed bill this week.