Less pollution and the odd shapes of snow grains as they pack together should help cut the decline of snowpack later this century.

In a new paper, researchers point to three major efforts where the biggest climate mitigation gains stand to be realized: ramping up carbon dioxide removal, reigning in non-carbon dioxide emissions and halting deforestation.

The Co-Optimization of Fuels & Engines initiative recently outlined six years of research in a findings and impact report.

Methane emissions from coal mines are likely higher than previously calculated, largely due to emissions from abandoned mines.