How to reduce CO2 emissions effectively? We have a new paper in @NatureEnergyJnl detecting a-priori unknown policy interventions using machine learning. We find 10 policies in EU countries that reduced emissions 8-26%. @MoritzPSchwarz
#Econtwitter nature.com/articles/s4156… Rather than asking if a particular policy works, we look at reverse-causal question – can we find emission reductions and attribute them to policies? We detect changes in emissions as structural breaks in two-way fixed effects panels as a-priori unknown treatment effects.