-
invented 1920-
researched 1970 last for several decades, or even over a century
used in everyday household items
thought to be safe -
not a hole- just thinning og it
ozone absorbs UV radation- thins, more UV reaches Earth
1974- scientists prove CFCs
1985- scientists discovered massive thinning over Arctic -
global health risk - UV exposure
- human health, phytoplankton
aware to humans in 1980 -
-very successful
-broader impacts
-if we unify, we can fix