May 26, 2011
Water is the most common substance on the planet yet it has some very unusual characteristics. Pure water is odourless and tasteless. Water has a very […]
May 25, 2011
More than 900 new alien species have been encountered in the coastal environments of the eastern Mediterranean Sea in recent decades, including the poisonous pufferfish. The […]
May 24, 2011
Authorities from the Northern Cape have expressed their concern about the environmental impacts of often illicit alluvial diamond mining along the Lower Vaal River. Due to […]
May 24, 2011
Solar photovoltaic (PV) technologies have emerged as the “big winner” in South Africa’s 20-year integrated resource plan (IRP) for electricity, which indicates that the PV solutions […]
May 16, 2011
The world has forgotten that farmers are the most important human beings alive. Not only do they grow food, they also manage half the world’s land, […]
May 14, 2011
How much water is contained in one beer? According to a new a report, quite a lot actually. Every litre of beer enjoyed by thirsty South […]
May 13, 2011
Lack of adequate water poses a major constraint in increasing agricultural production in semi-arid areas in South Africa. However, the use of appropriate crop production techniques, […]
May 13, 2011
Long after the political uprisings in the Middle East have subsided, many underlying challenges that are not now in the news will remain. Prominent among these […]
May 11, 2011
Some time ago John wrote about the environmental benefits and risks of a rise in tilapia farming. While their adaptability and relatively low position on the […]
May 11, 2011
Evidence that the world’s water cycle has already intensified is contained in research published in the American Journal of Climate. The change in the water cycle […]
May 5, 2011
As water resources in Southern Africa come under pressure from growing population, climate change and increasing industrial and agricultural use, economic accounting for water is among […]
May 3, 2011
Contrary to popular belief, birth control pills have been found to account for less than 1% of the oestrogens found in the USA’s drinking water supplies. […]
May 3, 2011
Drought is a part of normal life in many parts of the world and given the threats posed by climate change, place with traditionally low rainfall […]
May 3, 2011
Solar power is certainly increasing in popularity, as studies show that the global PV (photovoltaic cell) market might have exceeded 16 GW in 2010. In comparison […]
May 1, 2011
The subsurface water system can be divided into an unsaturated (vadose) zone that normally has air-filled spaces, and a saturated zone in which all available spaces […]
April 30, 2011
Interested in ecological economics? (And if you call yourself an environmentalist or are even minimally concerned about green issues, you should be.) Then here are two […]
April 28, 2011
Blue-green algae bloom in China In South Africa, we are highly dependent on surface water (rivers and dams) for our daily water supply. Pollution of these […]
April 27, 2011
We all need water to live. Humans can survive a month without food but only a week without water. Why is water so important? Every cell […]