Sen. Bernie SandersBernard (Bernie) SandersResurfaced Buttigieg yearbook named him 'most likely to be president' On The Money: House Dem says marijuana banking bill will get vote in spring | Buttigieg joins striking Stop & Shop workers | US home construction slips in March | Uber gets B investment for self-driving cars Buttigieg joins striking Stop & Shop workers MORE (I-Vt.) introduced a bill Thursday that would require the Congressional Budget Office to calculate the effect legislation would have on carbon emissions.

The Carbon Pollution Transparency Act, S. 2905, would direct the CBO to calculate a carbon score for each bill or resolution.

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The CBO already informs lawmakers about the economic effect of legislation, but Sanders’ bill aims to ensure Congress knows the environmental effects as well when considering legislation. The bill would require CBO to identify how much a measure would increase or decrease carbon emissions.

Sanders has said climate change is the greatest environmental threat facing the planet and that lawmakers should weigh the carbon footprint of legislation when deciding how to vote.

His bill comes as the administration ramps up their climate change push ahead of next week's United Nations climate summit.