With an energy crisis looming across Europe, some people were joking that those who follow the American Santa Claus traditions should rather be naughty than nice this year, because coal would be more valuable this winter than toys. Also this winter, the price per ton of carbon emissions exceeded €100 in the EU emission trading system for the first time - presumably triggered by a shift in electricity generation from gas to coal, which is more carbon intensive per MWh of electricity generated. Oil and gas prices have surged last year far beyond the levels which would have been for example the CO2 tax on fossil fuels rejected by Swiss voters in 2021. This might have provided an unintended stress test of what the social and economic impact would be if we were serious about decarbonisation and has spurred a level of attention and investment into "alternative energy" (now called renewable or green energy) not seen since the oil crises in the 1970ies. In order to keep the momentum...