We have exceeded our planetary boundaries and are in the free-fall stage of this disaster.
For the people of Africa this collapse is already underway, it’s only an “Academic discussion”  in privileged circles predominantly in the Affluent West.

“If we don’t reverse this trend, we’ll eventually reach a point where the biomass battery discharges to a level at which Earth can no longer sustain us,” Schramski said.

Sorry to be the ‘Bringer’ of bad news but if you factor in Runaway Abrupt Climate Change and the 10 to 40 year lag between cause and effect you can see that the credit the planet  is living on has Expired.

Professor Guy McPherson and myself will tour NZ in November 2016 talking about the immediate consequences that will unfold as the greatest experiment in the history of our species plays out on the unsuspecting.

Habitat  collapse, Global Economic collapse, Habitat, Food and Water  wars. 450 Nuclear Power Station melt-downs and 1200 spent fuel pool fires.  Welcome to our dystopian future that will very soon be our reality.
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‘Unless humans slow the destruction of Earth’s declining supply of plant life, civilization like it is now may become completely unsustainable, according to a paper published recently by University of Georgia researchers in the Proceedings of the National Academy of Sciences.

“You can think of the Earth like a battery that has been charged very slowly over billions of years,” said the study’s lead author, John Schramski, an associate professor in UGA’s College of Engineering. “The sun’s energy is stored in plants and fossil fuels, but humans are draining energy much faster than it can be replenished.”  Article in full, continues here:  ‘Earth’s ‘Battery’ Draining Too Fast to Sustain Life‘: