We might all know the most populated country in the world. But do you know the most practised religion in the world? In this video Ramkumar Singaram – best motivational Speaker in chennai , shares data not only on the countries that are most populated, but also the coutnries that have high life expectancy. Want to know where does India stand and in particular Tamilnadu? Listen to this video to know some interesting data on World’s population.