RJ Mackenzie
All Stories by RJ Mackenzie
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AnimalsMeet Bruce, the disabled kea parrot who is the boss of his flock
With half a beak, Bruce has developed a unique fighting style that has won him top status in his flock, videos and documented interactions reveal.
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Health & MedicineExplainer: What are ultraprocessed foods?
Packed with chemical additives, these foods have become a major part of our diets. Scientists have begun to worry about how ultraprocessed foods may impact health.
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AnimalsA bonobo’s imaginary tea party hints that apes can pretend
Kanzi would sometimes play with imaginary juice and grapes, just as humans might. The bonobo's ability challenges old ideas about how animals think.
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BrainWhy we aren’t really ‘left-brained’ or ‘right-brained’
The idea that we use different sides of the brains to be creative or logical is popular — but it’s not supported by science. Here’s why.