Friday, 25 November 2011

Forget oil. Population growth and water supply, the Arab worlds real challenge

Rapid population growth, spreading water shortages and growing food insecurity are already plaguing many Arab nations. For example, grain production has started to fall as aquifers (underground water-bearing rocks) have become depleted. Saudi Arabia used to be self-sufficient in wheat production but has now phased this out as its aquifers have been bled dry. As a result it will become totally dependent on imported grain to feed its growing population. Realising that its population cannot eat oil, the Saudis have started to buy or lease land countries such as Ethiopia and Sudan. The problem is that these countries often have real problems feeding their own people, let alone trying to support the food needs of other countries [read more]

Thursday, 24 November 2011

Is carbon capture feasible? The race to bury carbon dioxide under ocean

Often touted as the solution to halting climate change, Carbon Capture and Storage (CCS) for electricity generation has not yet been carried out commercially anywhere across the globe. Early efforts in the UK and around the world have so far produced little in terms of practical and workable models... [read more]

Kenya’s forests and the legacy of Wangari Maathai

Over the last 30 years, vast swathes of Kenya’s forests have been ruthlessly felled for fuel wood, building materials and other uses. Abusing nature in this way always results in a payback. In Kenya’s case it has been rising temperatures, increased droughts and persistent water crises...[read more]