In 1800, the world had 1 billion residents. According to the BBC, the world’s 7 billionth baby, a girl named Nargis, was born today in India. Population growth has a huge impact on our communities, our health and the health of the planet. And some experts suggest that the world cannot sustain such a large, and growing, population.

Find out more: Watch the captivating video by National Geographic below. Then check out the 7BillionActions blog put out by the United Nations Population Fund focused on how we can make better use of our shared resources as our population continues to climb. (You can submit your innovative ideas for change on the UN Environmental Program’s Twitter page or Facebook page.)