A few selected excerpts for those who don’t have the time to read:

Two theoretical physicists specializing in complex systems conclude that global deforestation due to human activities is on track to trigger the “irreversible collapse” of human civilization within the next two to four decades.

They say that if the rate of deforestation continues, "all the forests would disappear approximately in 100–200 years.”

“Clearly it is unrealistic to imagine that the human society would start to be affected by the deforestation only when the last tree would be cut down,” they write.

This trajectory would make the collapse of human civilization take place much earlier due to the escalating impacts of deforestation on the planetary life-support systems necessary for human survival—including carbon storage, oxygen production, soil conservation, water cycle regulation, support for natural and human food systems, and homes for countless species.

The verdict therefore seems quite stark: if we continue at the current rate of deforestation, population growth and resource consumption, collapse would appear unavoidable within the next two to four decades.

Tried to pick out the main points. The rest of the article is more abstract.

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