The unprecedented flooding in Pakistan in the latter half of 2010 disrupted the lives of 20 million people, but it also affected the country's arachnid population.
With more than a fifth of the country submerged, millions of spiders climbed into trees to escape the rising floodwater. As the water has taken so long to recede, the trees quickly became covered in a coocoon of spiderwebs. The result is an eerie, alien panorama, with any vegetation covered in a thick mass of webbing. You can see images from the region in the gallery below.
However, the unusual phenomenon may be a blessing in disguise. The UK's department for international development reports that areas where the spiders have scaled the trees have seen a far fewer malaria-spreading mosquitos than might be expected, given the prevalance of stagnant, standing water.
DFID is providing aid to the communities affected by the disaster, including safe drinking water, healthcare, food and shelter. To reduce the population's long-term dependence on that aid, the government agency is now offering wheat seeds and tools to farmers, and jobs and skills training for those in rural areas. However, reconstruction in the worst-hit areas is expected to take many years.
http://www.wired.com/wiredscience/2011/03/pakistan-tree-spiders/
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