Natural ecosystem conversion
It is clear that much land needs to be kept for agricultural use but it is also possible that the area required for food production will stabilize in the future.
03 Oct 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Human use and conversion of tropical forests
Tropical forests hold the largest terrestrial carbon store and are active carbon sinks. Reducing
emissions from deforestation and degradation is a vital component of tackling
dangerous climate change. In addition, tackling illegal and ill-managed logging will be
an important part of reducing emissions from forestry.
27 May 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Ratio of wastewater treatment
The ratio of treated to untreated wastewater reaching water bodies for 10 regions. An estimated 90 per cent of all wastewa- ter in developing countries is discharged untreated directly into rivers, lakes or the oceans (UN Water, 2008).
01 Mar 2010 - by UNEP/GRID-Arendal, Hugo Ahlenius
Radiation from Chernobyl
What do the Chernobyl disaster, the Three Gorges dam in China and the spread of the Sahel have in common? In each case natural and manmade influences have forced thousands, sometimes millions of people, to leave their land or country of origin.
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal