|
|
 |
|
| 1 September 2012 About 450 million years ago plants from the ocean began to colonize the Earth. Then gradually soil and vegetation covered the globe. Dinosaurs emerged, then mammals, and the soil flourished. However, in the last 8,000 years 94% of Earth's soil has been degraded, with 50% of all woodlands being destroyed since 1960. |
| Image | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | |