RE: The 5 Biggest Questions Facing Humanity Right Now

Hi everyone , i can recomend the great book of Yuval Harrari "Sapiens: A Brief History of Humankind" that talks a little bit about the 5th question...and many others

https://www.amazon.com/Sapiens-Humankind-Yuval-Noah-Harari-ebook/dp/B00ICN066A/ref=sr_1_3?s=digital-text&ie=UTF8&qid=1499372316&sr=1-3&keywords=Yuval+Noah+Harari