A new flagship UN report on climate change out Monday indicating that harmful carbon emissions from 2010-2019 have never been higher in human history, is proof that the world is on a "fast track" to disaster, António Guterres has warned, with scientists arguing that it's 'now or never' to limit global warming to 1.5 degrees. The sun follows a natural 11-year cycle of small ups and downs in intensity (bottom chart), but the effect on the earth is small. Over the same period, the average global temperature has increased markedly (top chart). Source: National Academy of Sciences, Climate Change Evidence & Causes, 2020. Changes in the Earth's Reflectivity Exacerbating global warming isn't the only negative impact of tropical deforestation. It also wipes out biodiversity: More than half of the world's plant and animal species live in tropical Natural Causes of Climate Change. Some amount of climate change can be attributed to natural phenomena. Over the course of Earth's existence, volcanic eruptions, fluctuations in solar radiation Vay Nhanh Fast Money.

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