60-second Science
Ancient Clam Shell Reveals Shorter Day Length
- Autor: Vários
- Narrador: Vários
- Editora: Podcast
- Duração: 0:03:43
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Sinopse
The growth layers in a 70-million-year-old clam shell indicate that a year back then had more than 370 days, with each day being only about 23.5 hours.
