The 4 greatest threats to the survival of humanity

With the invention of the atomic bomb, humanity gained the power to destroy itself for the first time in our history. Since then, our risk of either extinction or the collapse of civilization has steadily increased. Just how likely are we to destroy ourselves? And what poses the greatest threat to our survival? Dig into four existential threats and explore how we can safeguard our future. [Directed by Reza Riahi, narrated by Bethany Cutmore-Scott, music by André Aires].