Peggy Hollinger is right that sustainable aviation fuel alone is not enough to get the industry to net zero emissions by 2050 (Report, June 22). But that’s a case for more investment in science and technology, not to give up hope on this commitment.
We all know that flying is directly contributing to climate change. However, it also has widespread benefits, supporting trade, research, economic growth, medical aid, and connecting remote and urban areas.
The transition to net zero emissions must happen in a just and sustainable way. Pricing much of the world’s population out of flying will not accomplish that.
So-called “miracle technologies” can and do arise when scientists, industry, government and philanthropists unite around a common cause. We saw this in the pandemic with the rapid development of new Covid-19 vaccine technologies and therapies.
Visionary philanthropists recognise this. Brahmal Vasudevan and Shanthi Kandiah recently pledged £25mn to establish the Brahmal Vasudevan Institute for Sustainable Aviation, which will look at all elements of air transport — from fuel and aircraft design to airport infrastructure, air traffic control and aviation policy.
We need to find a way to keep all the benefits aviation brings in a way that is safe and sustainable. Investing in science and technology now is the way to achieve that.
Professor Alice Gast
President, Imperial College London London SW7, UK