Before revision: External links International Ozone Association European Environment Agency's near real-time ozone map (ozoneweb) NASA's Ozone Resource Page OSHA Ozone Information Paul Crutzen Interview—Video of Nobel Laureate Paul Crutzen talking to Nobel Laureate Harry Kroto by the Vega Science Trust NASA's Earth Observatory article on Ozone International Chemical Safety Card 0068 NIOSH Pocket Guide to Chemical Hazards National Institute of Environmental Health Sciences, Ozone Information Ground-level Ozone Air Pollution NASA Study Links "Smog" to Arctic Warming—NASA Goddard Institute for Space Studies (GISS) study shows the warming effect of ozone in the Arctic during winter and spring.
After revision: External links International Ozone Association European Environment Agency's near real-time ozone map (ozoneweb) NASA's Ozone Resource Page OSHA Ozone Information Paul Crutzen Interview—Video of Nobel Laureate Paul Crutzen talking to Nobel Laureate Harry Kroto by the Vega Science Trust NASA's Earth Observatory article on Ozone International Chemical Safety Card 0068 NIOSH Pocket Guide to Chemical Hazards National Institute of Environmental Health Sciences, Ozone Information NASA Study Links "Smog" to Arctic Warming—NASA Goddard Institute for Space Studies (GISS) study shows the warming effect of ozone in the Arctic during winter and spring.