Q: how to safe the world? (this is no joke-question, but i know that you are as mortal as me so you won't have a huge answer for me, so give me just one word which has poetic deepness)
A: the 2 main breakthroughs that i think will be very important to the world will be teleportation, and some form of simultaneous global communication among everyone simultaneously. to me those 2 things seem to be the most important elements that we will need in order to remedy the competitive/mortal nature that is hard-wired into all living species throughout the history of this planet