There has been a lot of discussions and debates about global warming and how we can save the Earth from depletion. There is a scientific consensus that climate change is occurring, and that human activities are the primary driver. Many impacts of climate change have already been observed, including glacier retreat, changes in the timing of seasonal events and so on.

The main effect for global warming is human emission of green house gases. We probably have to do something now in order to save the environment before its too late.

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