Methane (CH4) and nitrous oxide (N2O) emissions in Latin America and the Caribbean
In addition to carbon dioxide (CO2), other greenhouse gasses that play an important role in the region are methane (CH4) and nitrous oxide (N2O). These gasses are produced primarily in the sectors of waste management, mining, industrial processes, and in the production and distribution of natural gas, petroleum and agricultural products. Among the region’s countries, Brazil is the highest emitter of both methane and nitrous oxide. Other countries...
22 Nov 2010 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Who is involved? (The making of international legislation)
Recognizing that industrial society must fix this major flaw in the system, governments and many forward-looking companies started exploring solutions as early as the 1970s. The strong activism of civil society organizations and the interest of the media in cases of toxic waste dumping were central in bringing the issue on the international agenda. By the 1980s, the international community launched treaty negotiations under the auspices of the Un...
07 Jan 2008 - by Cécile Marin, Emmanuelle Bournay
Environmental threats in the Barents Region
The Barents region is in the Arctic and covers the area of Western Russia and the northern areas of Finland, Sweden and Norway. This map indicates the political boundaries and economic areas in the region. More importantly it shows where environmental dangers are located and the level of grazing on pastoral lands. (Please note that the The Barents Euro-Arctic Council has expanded the membership since 1998)
04 Oct 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Two scenarios for biofuels by 2030
Biodiesel is produced from oil, which can be sourced from oil seed crops such as rapeseed, soy bean, sunflower or jatropha and from waste oil such as cooking oil. Water and other contaminants are removed from the oil and the fatty acid content present in the oil is separated and ransformed.
Biodiesel can be blended with conventional diesel in vehicles, usually in a 5 per cent blend (B5).In some countries it is sold in blends up to 20 per cent (B...
05 Jan 2009 - by UNEP/GRID-Arendal
The spread of cholera 1950-2004
Increasing floods in between dry periods represent ideal conditions for spreading diseases such as cholera. In Nouakchott, the capital of Mauritania located in the desert, precipitations - when they occur - are always accompanied by a cholera epidemic, especially in poor areas where waste matter is not managed. Cholera had almost disappeared globally by the mid 1950s, but it reappeared and spread throughout the world during the last few decades. ...
26 Jan 2009 - by GRID-Arendal
Slum population in urban Africa
One of the major challenges of urbanisation in Africa is the rapid expansion of areas of informal settlements. These slum areas tend to lack infrastructure such as pipe-borne water and sewerage, and services such as garbage collection and waste management are often non-existent.
18 Mar 2011 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Pressures on the South African coast
Population growth puts pressure on coastal ecosystems. Increased population means growing demand for land for housing and infrastructure, increased use of living resources for food, and more use of available freshwater resources. The negative environmental impacts of the shipping industry also harm the coastal ecosystem. Impacts from shipping include oil spills and the discharge of ballast water and waste into the sea, which affect the quality of...
21 Jun 2011 - by Riccardo Pravettoni, UNEP/GRID-Arendal