The Guardian has an article headed “Biodiversity is below safe levels across more than half of world’s land – study” (Habitat destruction has reduced the variety of plants and animals to the point that ecological systems could become unable to function properly, with risks for agriculture and human health, say scientists)
From what I saw at Solitude Farm, here in Auroville, the solution is there, in Permaculture. But it requires quite a radical change in the way our societies would work. But Permaculture would also create the change, from the ground up, in a fairly simple level, and no doubt incrementally.
Websites:
Auroville
Auroville Permaculture
Solitude Farm