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- Through 2018, humans have reduced forest area by ~30% and grasslands/shrubs by ~68%, to make way for livestock grazing and crops for humans. (en)
- The period since 1950 has brought "the most rapid transformation of the human relationship with the natural world in the history of humankind". (en)
- Over recent decades, "forest disturbance" by fire has increased in most of the planet's forest zones. The increase in area, frequency, and severity of forest fires creates a positive feedback that increases global warming. (en)
- Globally, wildfires and deforestation have reduced forests' net absorption of greenhouse gases, reducing their effectiveness at mitigating climate change. Global warming increases forest fires that release more greenhouse gases, creating a feedback loop that causes more warming. (en)
- Overall, 20% of the Amazon rainforest has been "transformed" and another 6% has been "highly degraded", causing Amazon Watch to warn that the Amazonia is in the midst of a tipping point crisis. (en)
- The rate of global tree cover loss has approximately doubled since 2001, to an annual loss approaching an area the size of Italy. (en)
- Loss of primary (old-growth) forest in the tropics has continued its upward trend, with fire-related losses contributing an increasing portion. (en)
- Home to much of the Amazon rainforest, Brazil's tropical primary (old-growth) forest loss greatly exceeds that of other countries. (en)
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