The 'For a healthy climate (Glacier Initiative)', submitted at the end of November 2019, seeks to enshrine the objectives of the Paris Agreement in the constitution. It calls for Switzerland to reduce its greenhouse gas emissions to net zero by 2050 at the latest. According to the initiative, no fossil heating and motor fuels can be sold from 2050 whereby exemptions are permitted if no technical alternatives are available. The remaining emissions are to be balanced by safe greenhouse gas reductions in Switzerland. This also applies to the climate impacts of international aviation. The initiative also calls for the definition of a reduction pathway, including interim goals, at legislative level which will, at the minimum, ensure a linear reduction of greenhouse gas emissions by 2050.