Global warming over the last ten years or so would have been more extreme if it weren't for volcanoes, says a team from the University of Colorado, Boulder.
Volcanic eruptions may be the explanation for large changes in the sulfur dioxide content of Venus’s atmosphere, and one intriguing possible explanation is volcanic eruptions.
The introduction of the Clean Air Interstate Rule in 2005 has led to a big reduction in pollution from eastern US coal power plants, data from NASA's Aura satellite shows.
