Guardian: Soot from burned wood and diesel exhausts may have twice the impact on global warming than previously thought, according to a new study published on Tuesday.
The "black carbon" is said to be the second most important man-made agent of climate change.
The findings, published in the Journal of Geophysical Research Atmospheres, suggest there may be untapped potential to curb global warming by reducing soot emissions.
Huge quantities of man-made soot enter the atmosphere every year. Around 7.5m...