World Population Day: records high

Indian Prime Minister Narendra Modi participates in a mass yoga session along with other Indian yoga practitioners to mark the International Yoga Day at Rajpath in New Delhi on June 21, 2015. World Population Day falls on July 11th every year. It was first observed on 11 July 1987, when the world population reached 5 billion. Here's a throwback to the "power of numbers" that hit the records all across the world.[Photo: VCG]