Here and there - What are the solutions to the population explosion phenomenon

"Report by Yara Abu Naama - A Global Challenge: The Future of Humanity in the Face of Population Growth

Since the United Nations declared July 11 as World Population Day in 1989, the world"s population has increased from 5 billion to 8 billion. What are the challenges that we, as humanity, must confront to mitigate the phenomenon of population explosion?"