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Did anyone check the number of candles on here? KikoStock/Shutterstock.com

How old is my pet in dog years or cat years? A veterinarian explains

Based on his age in 'dog years,' could your animal pal legally buy alcohol? Or would he be cashing in on his senior discount? Veterinarians are more interested in life stage than a particular number.
Professor Lee Berger from the University of the Witwatersrand holding the skull of Homo Naledi. EPA/Shiraaz Mohamed

Homo naledi may be two million years old (give or take)

The big question being asked is: where does Homo naledi fit in the evolutionary tree? Assessing the similarity or dissimilarity between fossil skulls has provided a possible clue to the answer.

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