Two new studies show that the US is falling behind on climate goals. A global ranking of countries completed by Yale and Columbia found that the US now ranks 43rd among 180 nations that Columbia and Yale evaluated in their most recent Environmental Performance Index (EPI). The last time researchers ranked countries in 2020, the US ranked in 24th place.

When it comes to climate indicators, the US fell all the way to 101 from its previous spot at 15th place. President Biden’s plan for emissions is also falling behind, despite his effort to reach these goals. It will take major changes for the US to get back on track.

The latest EPI reflects the about-face in climate policies under Donald Trump between 2017 and 2019, The New York Times reports. While in office, Trump rolled back on many environmental regulations and pulled the US out of the landmark Paris climate agreement.

The Paris accord commits nearly all of the world’s nations to emission reductions aimed at keeping global warming well below 2 degrees Celsius. A 2-degree Celsius increase would be devastating to many of the world’s ecosystems. Biden re-entered the Paris agreement when he got into office. However, his efforts to pass legislation to move the US to clean energy have been halted by Congress.

Biden planned to cut US carbon dioxide emissions by at least 50 percent from 2005 levels by the end of the decade. According to an analysis published last week in the journal Science, the US is projected to cut back on carbon dioxide emissions by on 6 to 28 percent by the end of the decade.

“The paper’s authors looked at six major energy and economy models to chart out what’s needed for the US to actually follow through on its pledge to halve emissions. The consensus from all six models was that, in order to meet the stated emissions goals, the nation’s grid and transportation system need to be overhauled,” The Verge reported. “We need much more of our economy to run on electricity from clean energy sources like wind and solar. Coal also needs to pretty much disappear from the nation’s power sector, the models agree. Wind and solar capacity would also need to grow two to seven times faster than they have over the past decade.”