Modern technology makes it easy to navigate our planet’s oceans, but think for a moment about ancient cultures such as the Vikings. How did they manage to navigate across great spans of water with such accuracy? While you are thinking of history did you know that our ancestors experienced a particular health problem that is the number one cause of death in the developed world today? Learn more about both ‘mysteries’ in this great video from SciShow!
Viking Sunstones and Mummy Health Secrets [YouTube]
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by Asian Angel via How-To Geek
Viking Sunstones and Mummy Health Secrets
Reviewed by Ossama Hashim
on
March 18, 2013
Rating:
Reviewed by Ossama Hashim
on
March 18, 2013
Rating:
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