Book for Future Human

Book for Future Human
There are many things happened in human history. These joy and tragedy became all kinds of form in our daily life. I want to tell future human don’t forget these messages that is worth to keep in our memory. I found these 26 things from 26 English alphabets, either 10 or 100 years even in 1000 should be firmly remembered.

Smile,Tears,Universe,Vacation,Warming,X chromosome,Y chromosome,Zero.