Dr Karl On Triplej
Rocking during sleep, morning sickness and coloured cat fur
- Autor: Vários
- Narrador: Vários
- Editora: Podcast
- Duração: 0:39:21
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Sinopse
Why do people rock from side-to-side when they sleep? Plus: are humans the only mammal that suffers morning sickness during pregnancy?; and why can cat fur have different colours along the length of each strand of hair?
