Update: Jonas Salk said: If all the insects were to disappear from the earth, within 50 years all life on earth would end.
Attila (opera) Attila is an opera in a prologue and three acts by Giuseppe Verdi to an Italian libretto by Temistocle Solera, based on the 1809 play Attila, KÃ¶nig der Hunnen (Attila, King of the Huns) by Zacharias Werner. The opera received its first performance at La Fenice in Venice on 17 March 1846.
Candide (operetta) Candide is an operetta with music composed by Leonard Bernstein, based on the novella of the same name by Voltaire. The operetta was first performed in 1956 with a libretto by Lillian Hellman; but since 1974 it has been generally performed with a book by Hugh Wheeler which is more faithful to Voltaire's novel.