Visualizing 7 Billion in 'How Did We Get So Big So Fast?' - Kasia Cieplak-Mayr von Baldegg - Video. World Population: 7 Billion. Watch this Video: World Population Nears 7... | 7 Billion Actions: Blog! 7 Billion and Counting. Seven Billion: Are You Typical? Sept milliards d'êtres humains et de nouveaux défis. 7 Billion, National Geographic Magazine.