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Watch: Water by the numbers
We look at the planet's water, how it's being used, and the increasing strains on this vital resource.
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We look at the planet's water, how it's being used, and the increasing strains on this vital resource.
If the population of the world was only 100 people, what would society look like?
Joseph E. Stiglitz and Linda J. Bilme's exhaustedly researched book, "The Three Trillion Dollar War: The True Cost of the Iraq Conflict," breaks down the price tag, from current debts to the unseen costs we'll pay for years to come.
It’s easy to extend their usefulness by turning them into a flower pot, watering can, or pencil holder.
We calculated the land area needed to supply the entire United States with solar power.
They are the most deadly weapon ever created by man. How many nuclear weapons are there? Who has them? Here are nukes by the numbers, the explosions and the destruction.
