BBC: Italy's tomatoes and Thailand's potent chillies, although closely associated with these nations, originate from elsewhere, a study shows.
The assessment of more that 150 key food crops shows how agriculture and diets rely on crops from other regions.
The authors say the results highlight the interdependence of food systems and the need for a united effort to ensure its resilience to future threats.
The findings appear in the journal Proceedings of the Royal Society B.
The research by...