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Benno Hansen

BBC News - Kenya's largest forest under threat - 1 views

www.bbc.co.uk/...science-environment-11556561

kenya bbc video deforestation

shared by Benno Hansen on 20 Oct 10 - No Cached
  • Benno Hansen on 20 Oct 10
     
    2 min video
Benno Hansen

BBC News - Placing a value on Kenya's largest forest - 0 views

www.bbc.co.uk/...science-environment-11564773

kenya deforestation

shared by Benno Hansen on 20 Oct 10 - No Cached
  • Prized as a "natural water tower", the forest has also been the target for aggressive clearance and timber logging in recent decades and its size has been cut by at least 40%.
  • Research by the Kenya Forest Research Institute (KEFRI) and the UN Environment Programme (UNEP) estimates the economic benefit of the forest to be more than $1.3bn per year.
  • Bordering the trees are some of Kenya's largest tea plantations - tea is one of the country's key exports and the research calculates that it benefits from the forest to the tune of $163m a year.
  • ...4 more annotations...
  • half of the country's power is driven by water
  • The study calculates that the Mau Forest's value to the electricity sector is $131.6m.
  • This blaze of lurid colour helps to make tourism one of Kenya's biggest earners, and the study reckons this industry receives $65 million in benefits from the forest.
  • Further services provided by the forest include an estimated $89million in storing carbon, $98million in controlling soil erosion and $21million in support for fisheries.
Benno Hansen

BBC NEWS | Science & Environment | Climate fixes 'pose drought risk' - 0 views

news.bbc.co.uk/...8188409.stm

water precipitation geoengineering climate change

shared by Benno Hansen on 09 Aug 09 - Cached
  • "if geo-engineering studies focus too heavily on warming, critical risks associated with such possible "cures" will not be evaluated appropriately"
  • climate change is about much more than changes in temperature. So using temperature alone to monitor the effects of geo-engineering could be dangerous.
  • current climate models tend to underestimate the effects on precipitation of both greenhouse gases and of volcanic eruptions
  • ...2 more annotations...
  • The article warns that geo-engineering of this type, combined with the effects of global warming could produce reductions in regional rainfall that could rival those of past major droughts, leading to winners and losers among the human population and possible conflicts over water.
    • Benno Hansen
      Benno Hansen on 09 Aug 09
       
      ecowar
  • "optimism about a geo-engineered 'easy way out' should be tempered by examination of currently observed climate changes."
    • Benno Hansen
      Benno Hansen on 09 Aug 09
       
      hvorfor skulle geoengineering ikke have uforudsete bivirkninger når klimaforandringerne i sig selv er en "uforudset" (overraskende stor) bivirkning ved afbrænding af fossile brændstoffer?
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