Curbing diesel emission could reduce big city mortality rate

US cities could see a decline in mortality rates and an improved economy through midcentury if federal and local governments maintain stringent air pollution policies and diminish concentrations of diesel freight truck exhaust, according to new research.

Read more

Cutting emissions gradually will avert sudden jump in warming

Steadily reducing fossil fuel emissions over coming years will prevent millions of premature deaths and help avoid the worst of climate change without causing a large spike in short-term warming that some studies predict, new analysis from finds. The finding dispels the misconception that the air-quality and climate benefits of transitioning to clean energy play out at different timescales — a sticking point in recent climate negotiations.

Read more