Net zero emissions by 2050

Several major airlines have pledged to reach net-zero carbon emissions by midcentury to fight climate change. It’s an ambitious goal that will require an enormous ramp-up in sustainable aviation fuels, but that alone won’t be enough, our latest research shows. The idea of jetliners running solely on fuel made from used cooking oil from restaurants or corn stalks might seem futuristic, but it’s not that far away. Airlines are already experimenting with sustainable aviation fuels, including biofuels made from agriculture residues, trees, corn and used cooking oil, and synthetic fuels made with captured carbon and green hydrogen. United Airlines, which has been using a blend of used oil or waste fat and fossil fuels on some flights from Los Angeles and Amsterdam, recently announced plans to power 50,000 flights a year between its Chicago and Denver hubs using ethanol-based sustainable aviation fuels by 2028. The airline also launched a US$100 million fund on Feb...

Leer in español Something significant is happening in the desert in Egypt as countries meet at COP27, the United Nations summit on climate change. Despite frustrating sclerosis in the negotiating halls, the pathway forward for ramping up climate finance to help low-income countries adapt to climate change and transition to clean energy is becoming clearer. I spent a large part of my career working on international finance at the World Bank and the United Nations and now advise public development and private funds and teach climate diplomacy focusing on finance. Climate finance has been one of the thorniest issues in global climate negotiations for decades, but I’m seeing four promising signs of progress at COP27. Getting to net zero – without greenwashing First, the goal – getting the world to net zero greenhouse gas emissions by 2050 to stop global warming – is clearer. The last climate conference, COP26 in Glasgow, Scotland, nearly fell apart o...