Top 10 major influential cities in history
The most influential cities in this history are the thriving, influential cultural and artistic centers.The mysteries 'buried' over time
Studies have been going on for hundreds of years, but scientists still give up on the unanswered question.Life in the world's most polluted city
From the sky to the ground, anywhere in Delhi (India) is also suffocating by the atmosphere of pollution and rubbish everywhere.