IPFS News Link • Science, Medicine and Technology
7 Advanced Ancient technologies we still Can't Replicate Today
• https://www.youtube.com, IndexSe7enRoman Concrete - http://www.smithsonianmag.com/history...
Viking Compasses - http://www.livescience.com/44366-viki...
Silphium - https://en.wikipedia.org/wiki/Silphium
Flexible Glass - https://en.wikipedia.org/wiki/Flexibl...
Damascus Steel - https://en.wikipedia.org/wiki/Damascu...
Greek Fire - https://en.wikipedia.org/wiki/Greek_fire