iThe Arab Spring was a revolutionary wave of protests in the Arab world that began in 2010.
The Summer of Love was a social phenomenon that occurred during the summer of 1967, when as many as 100,000 people converged in the Haight-Ashbury neighborhood of San Francisco.
Fall of Man refers, in Christian theology, to the transition of the first man and woman from a state of innocent obedience to God to a state of guilty disobedience.
Nuclear Winter is a hypothetical global climatic effect of nuclear war.
