Human activities are now adding about 7 billion metric tons of carbon into the atmosphere every year.

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The International Energy Agency estimates that the world will need to invest $16 trillion over the next three decades to maintain and expand energy supply.

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Mercury from one fluorescent lamp can pollute 22,700 liters of water beyond safe level for drinking.

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Since the beginning of the Industrial Revolution, carbon dioxide (a green house gas linked to climate change) in the atmosphere has increased by 35%.