The Science of Global Warming

Since the planet was first formed, Earth's climate has constantly changed and evolved, and temperatures have varied widely. Throughout the period of human civilization, however, the world has been enjoying a warm, temperate, and relatively stable climate. This stability has allowed human civilizations, along with countless other species of animals and plants, to proliferate and flourish in recent centuries. The release of carbon and other gases from the burning of fossil fuels in the last hundred years, however, may be causing a dramatic spike in global temperatures. Scientists have been studying this phenomenon since the 1950s, but only recently has a consensus emerged— that Earth is getting warmer due to human activities.

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