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More than 650 scientists have signed a letter urging world leaders meeting at COP15, the UN biodiversity summit, to stop burning trees to make energy. According to the letter, addressed to leaders including Joe Biden, Rishi Sunak and the European Commission president, Ursula von der Leyen, bioenergy has “wrongly been deemed ‘carbon neutral'". ‪Ülo Niinemets, professor of plant biology at the Estonian University of Life Sciences, is one of the signatories of the letter. He told Newsday that “60 percent” of renewable energy used around the world is based on biomass. He said: “The idea of moving towards renewable energy is to scale this up a lot, basically phase out coal and oil and replace this with bio-energy and that’s not sustainable because we don’t have enough land resources… carbon inside the biomass is also released… this also contributes to the atmosphere warming.” (Picture: A truck carrying tree trunks in the UK. Credit Getty Images)