Climate change. The sun bakes an icy Alberta landscape and glaciers are melting more quickly than before.

Climate change refers to distinct and sizable changes in climate patterns over a period of at least a decade. It has taken place throughout the Earth’s history and includes periods of warm temperatures and ice ages. The term “global warming” is less accurate, since it addresses only the heating of the planet and not the cooling. The accelerated rate at which climate change is occurring and the inability of many organisms to adapt to the rapidly changing environment is cause for concern.

iStockphoto/PetertenBroecke

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