Pretty interesting article on UNEP's latest report on the state of our planet's health,

Humans are completely living beyond their ecological means, says a major report published by the UN Environment Programme on Thursday.

The 550-page document finds the human ecological footprint is on average 21.9 hectares per person. Given the global population, however, the Earth's biological capacity is just 15.7 hectares per person.
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But for Ash, the main driver of the size of our footprint is our unsustainable consumption. "There is no doubt that we could sustain the current and projected population if we lived sustainably," he told New Scientist.

Read the full article on New Scientist