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How does the IPCC know climate change is happening?

By ucfamam, on 23 June 2015

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Climate change is one of the few scientific theories that makes us examine the whole basis of modern society. It is a challenge that has politicians arguing, sets nations against each other, queries individual lifestyle choices, and ultimately asks questions about humanity’s relationship with the rest of the planet.

The Intergovernmental Panel on Climate Change published its synthesis report on November 2 2014, a document that brings together the findings from the IPCC’s three main working groups. It reiterates that the evidence for climate change is unequivocal, with evidence for a significant rise in global temperatures and sea level over the last hundred years. It also stresses that we control the future and the magnitude of shifting weather patterns and more extreme climate events depends on how much greenhouse gas we emit.

This is not the end of the world as envisaged by many environmentalists in the late 1980s and early 1990s, but it will mean substantial, even catastrophic challenges for billions of people.