The “good” news is that about 140 countries —accounting for 91 percent of greenhouse gas emissions— have already proposed or set net-zero targets for around mid-century.
The bad news is that net-zero rhetoric does not match reality. Actually getting to net zero by 2050 means most countries need to do even more to strengthen their targets for cutting emissions—particularly large economies. For all of these countries, there is no way to meet these commitments without cutting emissions from diesel generators.