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60 Harvests and statistically savvy parrots
A listener asks if there can really only be 60 harvests left in Earth's soil. Are we heading for an agricultural Armageddon? Plus we meet the parrots who are the first animals, outside humans and great apes, to be shown to understand probability.
(image: Kea parrots in New Zealand)
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More or Less: Behind the Stats
Tim Harford and the More or Less team try to make sense of the statistics around us.
