writes that 170 bison were reintroduced in Romania's wilderness and they could be able to capture and store the CO2 emissions released by around 84.000 petrol cars in a year.

Experts at Yale University say that bison populations can help us become more climate resilient, as them grazing 48 kilometers of grassland helped capture the equivalent of 54.000 tons of CO2 emissions. That's around 10 times more than the same ecosystem would be able to capture without the bison actively participating.

Bison help the environment on a few levels. First of all, they eat the grass, which itself captured CO2 emissions, then they recycle the nutrients which fertilize the soil, facilitating plant-growth. At the same time, in the feeding process, they spread seeds around and by trumping the soil, they prevent the carbon from being released.

Maheen Khan, climate lead for WWF Netherlands, said that "these astonishing results show the potential for reintroduced wild animals to supercharge the ability of ecosystems to draw down atmospheric carbon."

Accelerated hunting between the 17th and the 19th centuries caused bison population in Europe to drop dramatically, driving the animal close to its extinction. Romania introduced the bison back in the wilderness in 2014, following 200 years of absence and the repopulation process proved successful.

Currently, some 7.000 bison roam the forests in Poland, Lithuania and Ukraine, among other ecosystems in Eastern Europe.

Experts at the Global Rewilding Alliance started working with those at Yale University to develop a computer-based model to determine the carbon-removal potential of a particular location, should wildlife be reintroduced there.

Professor Oswald Schmitz from the Yale School of Environment, lead author of the report and developer of the model, said that "our work reveals that wild animals could substantially increase an ecosystem’s carbon budget by 60-90 per cent, and sometimes even more, relative to cases where those animals are absent."

The team of researchers now look into applying the model worldwide to figure where are the best spots where bison repopulation could bring significant ecological benefits.