Marx Brothers of "The Big Store" the team announced they were retiring from the screen. Four years later, however, Chico persuaded his brothers to make two additional films, "A Night in Casablanca" (1946) and "Love Happy" (1949), to alleviate his severe gambling debts. Both pictures were released by United Artists. From the 1940s onward Chico and Harpo appeared separately and together in nightclubs and casinos. Chico fronted a big band, the Chico Marx Orchestra (with 17-year-old Mel Tormé as a vocalist). Groucho made several radio appearances during the 1940s and starred in "You Bet Your Life", which ran from 1947 to 1961
Influences on Karl Marx "when Darwin drew the conclusions from his research work and brought them to the knowledge of the public, we spoke of nothing else for months but Darwin and the enormous significance of his scientific discoveries". Historian Richard Weikart points out that Marx had started to attend "a series of lectures by Thomas Henry Huxley on evolution". In August 1866, Marx referred to Pierre Trémaux's "Origine et transformations de l'homme et des autres êtres" (1865) in another letter to Engels as "a very important advance over Darwin". He went further to claim that "in its historical and political application" the book