Have a _________ ________ at this slide. It shows world population from 0.005 billion in 10,000 BC to a projected 9 billion in 2050., closer look, To give you the _______ to that, it took over 10,000 years to reach 0.25 billion by AD 1000, but only 200 more years to hit 0.9 billion by 1800, context, Now, let's put that into __________ . From 1950 to 2000, population more than doubled from 2.5 billion to 6 billion in just 50 years, perspective, The ________ speak for themselves. Growth has been extremely slow for most of history, then exploded recently., figures, What does it mean in _______ __ food, water, and energy? Pressure on resources will keep rising., terms of, I should _____ ____ that the 9 billion projection for 2050 depends on choices we make today., point out.

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