Many countries have embraced a climate target of achieving net-zero emissions by 2050, but one country is taking it further.

Finland’s parliament passed a new Climate Change Act last week committing itself to achieving net-zero emissions by 2035 and negative emissions by 2040. While the timeline itself is notable, the act also makes Finland the first country to make a legally-binding climate negativity pledge, Protocol reported.

“High income countries have to take a progressive and active role when it comes to tackling climate change,” Finnish environment minister Emma Kari told Climate Home News.

The target was decided based on the work of The Finnish Climate Change Panel, which calculated Finland’s “fair share” of the world’s remaining carbon budget based on its population size, its ability to pay and its historical responsibility for the climate crisis.

“The results for Finland are clear in all cases. Finland should be GHG (greenhouse gas) neutral during the early 2030s and clearly net negative from 2040 onwards,” the study authors wrote.