2021 has heralded the dawn of a new form of hyper-carbon-intensive luxury travel, space tourism, in which hundreds of tonnes of carbon can be burned in just a ten-minute flight for around four passengers.28

Gösling and Humpe found that no more than 1% of the world population likely accounts for half of aviation emissions.30

Earlier studies also established the major contribution to carbon footprints of the rich and famous from flights, especially via private jets. Gösling’s study constructed aviation emissions estimates based on tracking the international travel of celebrities via their social media postings. Footprints – from aviation alone – were found to be in excess of a thousand tonnes per year.27

The fact that these countries are still not on track to reach the 1.5⁰C per capita level by 2030, and have still not delivered the minimal commitment to mobilize $100bn per year in international climate finance by 2020, is a double indictment of their moral and legal failure in view of the equity principle at the heart of the UNFCCC and its Paris Agreement.

The extreme difference between the expected carbon footprints of a small minority of the world’s population in 2030 and the global average level needed to keep the Paris Agreement’s 1.5⁰C goal alive is not tenable. Maintaining such high carbon footprints among the world’s richest people either requires far deeper emissions cuts by the rest of the world’s population, or it entails global heating in excess of 1.5⁰C above pre-industrial levels. There is no other alternative.