Amid widespread concerns about biodiversity loss, a single clear conservation message is engaging leading conservationists: the proposal to give half the surface of the Earth back to nature. Depending on the landscape conservation strategy, we find that, globally, 15–31% of cropland, 10–45% of pasture land, 23–25% of non-food calories and 3–29% of food calories from crops could be lost if half of Earth’s terrestrial ecoregions were given back to nature.
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This work was supported by a Natural Sciences and Engineering Research Council of Canada Discovery Grant and a Genome Canada/Genome BC grant (to N.R.).
The authors declare no competing interests.
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Mehrabi, Z., Ellis, E.C. & Ramankutty, N. The challenge of feeding the world while conserving half the planet. Nat Sustain 1, 409–412 (2018). https://doi.org/10.1038/s41893-018-0119-8
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