 |
| Evidence from satellites of thinning of the ozone layer led to the Montreal Protocol for reducing CFCs. |
 |
| Filchner Ice Shelf, Antarctica – 1973 and 1986 |
 |
| Transforming Desert to Cities Las Vegas, Nevada |
 |
| Las Vegas, Nevada – 1973 and 2000 |
 |
| Huang He Delta – 1979 and 2000 |
 |
Arctic Sea Ice 1979, 1985, 1995, and 2003 |
 |
| Breidamerkurjokull, Iceland – 1973 and 2000 |
