Humanity from space | the population clock

Clip | 3m 30s Can Humanity meet the population challenges ahead without destroying Earth? It took humanity 11.5 thousand years to reach a global population of one billion people, but only

another 130 years to double that. Up until now, humanity has been successful in developing the means to sustain this level of growth, but how can we continue to provide the food, water and

power required as the world’s population is set to increase by two billion over a single generation? Aired 07/21/2015 | Rating TV-PG Problems playing video?  Report a Problem | Closed

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