Wednesday 27 April 2011

Mexico City:A horrible face - a disaster!

Some 20 million people live in Mexico City, the world's fifth largest metropolitan area. In 1800 the urban fraction of the global population was 3 percent.

Monday 25 April 2011

Saturday 16 April 2011

Wednesday 6 April 2011

Different ways to work with laptop

Different ways to work with laptop. interesting and creative