10. Volcanism

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Carbon tax is a form of pollution tax. It levies a fee on the production, distribution or use of fossil fuels based on how much carbon their combustion emits.  It is a form of carbon pricing.  The objective of a carbon tax is to reduce the harmful and unfavorable levels of carbon dioxide emissions, thereby decelerating climate change and its negative effects on the environment and human health.  Carbon tax also makes alternative energy more cost-competitive with cheaper, polluting fuels like coal, natural gas and oil. Why do we need it? The combustion of fossil fuels releases carbon dioxide (CO2), a major greenhouse gas (GHG), into the atmosphere, and there is strong evidence that the buildup of GHGs is the primary cause of the global warming that has occurred in recent decades. CO2 concentration in the atmosphere has risen about 43% since the beginning of the industrial revolution in the mid-eighteenth century—half of that since 1980. In recent years...
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