The seven billionth live human will be born somewhere in this world about the time of Halloween this year.
World population didn't reach one billion until around 1830, about 180 years ago.
The most recent addition of a billion souls took only 12 years,
India has the fastest-growing population of any country, and will surpass China to become the world's most populous nation by 2025. Her numbers grew by 17.6 percent in the last decade, to 1.21 billion.
India's government and business establishment hope their population boom will be an engine for economic growth, but I think they're going to reap a bitter harvest.