|
|
 |
| How much land has become desert? |
|
 Nearly one fourth of all continental land on the Earth has become desert. This amounts to nearly 70% of all arable land in dry regions, about 3.6 billion hectares. About 900 million people or one in six people on the planet are affected by desertification.
|
| How many people in the world live without electricity? |
|
 About 2 billion. The majority of countries without access to electricity are in Central Africa and South Asia, including China and Mongolia. Nearly two billion people—or one in three on this planet—live without electricity. |
| How much damage is caused by air pollution? |
|
 Around the world damage to forests has been reported, caused by acid rain from air pollution and other factors. The damage is intensifying in regions such as Africa and South America, where fears of heavy impact on ecosystems are growing.
|
| How big is the hole in the ozone layer now? |
|
 Since 1985 the hole in the ozone that envelopes the Earth has grown larger than the entire continent of Antarctica. The largest ozone hole ever at the South Pole was recorded in 2000, with almost the same size hole appearing in 2001.
|
|
|
| Regional Sites |
|
|
|
|
|
Other languages
Top of page