BBC Audio Witness History The founding of USAID.txt
Spicy chillies Behind the agonising pleasure of capsaicin.txt
7:21Spicy chillies: Behind the agonising pleasure of capsaicinWhat do ak-47 blazehumans and an Asian tree shrew have in common? We are the only two mammals known to tolerate the burn of capsaicin – the active chemical compound responsible for making chilli peppers spicy hot. Yet, how did we come to love the irritant that evolved to keep us and other hungry omnivores and herbivores at bay?An extraordinary 57.3 million tons of chilli peppers are consumed globally each year. 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