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60 Harvests and statistically savvy parrots
Can there really only be 60 harvests left in Earth's soil? Plus we meet the parrots who understand probability.
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: the highly intelligent and endangered Kea parrots of New Zealand / Credit: Imogen Warren/Getty images)
Last on
Mon 25 May 202015:50GMT
BBC World Service except Australasia, East and Southern Africa & West and Central Africa
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- Sat 23 May 202017:50GMTBBC World Service Australasia & South Asia only
- Sun 24 May 202005:50GMTBBC World Service
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- Mon 25 May 202012:50GMTBBC World Service East and Southern Africa & West and Central Africa only
- Mon 25 May 202015:50GMTBBC World Service except Australasia, East and Southern Africa & West and Central Africa
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