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As the world increasingly turns toward natural climate solutions like reforestation and grassland restoration to sequester carbon, it may be overlooking a crucial ally: animals. 

Protecting existing populations and restoring others to their natural habitats often improves the natural capture and sequestration of carbon dioxide within ecosystems, according to a study published today in the journal Nature Climate Change. Robust populations of just nine species, such as sea otters or gray wolves, or genera, including whales, could lead to the capture of 6.41 gigatons of CO₂ annually, the researchers found. That’s about 95 percent of the amount needed to be removed annually to ensure global warming remains below 1.5 degrees Celsius (2.7 degrees Fahrenheit).

In “Trophic rewilding can expand natural climate solutions,” led by the Yale School of the Environment and the Global Rewilding Alliance, 15 international experts compare the carbon content in savannas, forests, and other ecosystems when their wildlife populations were healthy and when they were below historic... Read more

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