GREENHOUSE GASES: O3
HealthValue
ALL CANCERS
MELANOMAS
OZONE, O3, is a greenhouse gas, mainly located in the stratosphere. There is not much of it: 12 000 molecules of ozone for 1 000 000 000 other molecules of air
INCREASED UV: OZONE is a wonderful filter that blocks UV rays coming from the sun. Decreasing OZONE increases UV irradiation, hence skin cancers.
Increased UV irradiation has dramatically increased
frequency of Melanomas, a deathly skin cancer
CAUTION: Ozone is wonderful in the stratosphere. But at ground level it is a severe respiratory irritant!!!
OZONE was depleted in our atmosphere from 1980 to 1995, essentially by CFCs (chlorofluorocarbons used for refrigeration and as propellants for sprays)
Propellants for sprays
depleted Ozone