This article is primarily about effects during the 21st century. For longer-term effects, see Long-term effects of global warming. See also Effects of global warming on humans.
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Summary of climate change impacts.
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Projected global warming in 2100 for a range of emission scenarios.
The effects of global warming are the environmental and social changes caused (directly or indirectly) by human emissions of greenhouse gases. There is a scientific consensus that climate change is occurring, and that human activities are the primary driver.[1] Many impacts of climate change have already been observed, including glacier retreat,[2] changes in the timing of seasonal events[2] (e.g., earlier flowering of plants),[3] and changes in agricultural productivity.[2]