Mount Everest: Impacts of tourism

"The committee says it brought back 25 tonnes of rubbish from Everest last spring – including 12,000kg of paper and plastic and 11,250kg of human waste."

Useful sources for Edexcel A2 Unit 4 Consuming the Rural Landscape
The Mission to clean up Mount Everest The Guardian
Calls for long term Everest waste management plan - starting with toilets The Guardian

20 of the world's most dangerous places

In looking for something completely different, I stumbed across this. The Travel section of The Telegraph has put together an In Pictures feature on 20 of the world's most dangerous places. The map of the world below shows you the countries involved. Not all of the places are the entire country. For many places, they are perfectly safe for tourists to visit, but certain areas are very dangerous indeed!

http://bighugelabs.com/flickr/map.php

What do you notice about where 20 of the world's most dangerous places are located? Is there anything that surprises you? Why are they considered dangerous - is there a pattern?