India Projected to Surpass China as World's Most Populous Nation

India's population estimated at 1.4286 billion compared to China's 1.4257 billion, according to UN report.
India's young population could drive economic growth but also faces challenges like lack of jobs and infrastructure.
China's population declining due to low birth rates and aging demographics, threatening its status as a world power.
Companies hope to move manufacturing from China to India as China's workforce shrinks.
Population growth slowing globally but rising in Africa; India must invest in education, jobs and empowering women.