Wild animals can be overlooked when it comes to reducing carbon, but by rewilding key species, we can restore entire ecosystems and boost nature’s carbon-absorbing powers. Conserving wildebeest on the Serengeti increases natural grazing, reducing wildfires and turning the plains into a carbon sink. Wild animals may scatter seeds and nutrients, helping plants grow while controlling other species whose favourite snacks are woody plants. In the ocean, the iron-rich waste of whales provides ideal conditions for phytoplankton, the incredible micro-organisms that fix 40% of the planet’s CO2. Rewilding just 9 animals could account for 95% of our CO2 absorption targets by 2100 and cap the global temperature rise at 1.5°C. The 9 animals include the African forest elephant, the American bison, the grey wolf, and more. Watch to view the full list of animals.