This is a peaceful blue planet.
Being Human, TimeThis 2 minute history of the world has been doing the rounds recently.
There’s an awful lot of attention paid to recent events and big wars there.
HG Wells, somewhat upset by WW1, and then WW2, wrote his history of the world not to identify an record periods of way, but to identify and champion those moments which leads to peace.
Very well worth a read: http://www.gutenberg.org/files/35461/35461-h/35461-h.htm