This is a program in a CBC radio series, presenting features, weather, sports, and music which include the following segments in today's ASSIGNMENT series. Gordon Sinclair reads the national weather. A report on the possible harmful effects of overexposure to X-Rays. Gil Christie, reporter, talks to Dr. Arthur C. Singleton, Professor of Diagnostic Radiology at University of Toronto, about how such X-ray exposure may be controlled. A report on the treatment of "retarded children"in Winnipeg. The past president of the Manitoba Association for Retarded Children, talks to Warner Troyer, reporter, about the Kinsmen School for Retarded Children in Winnipeg. Bruce Rogers narrates, part three of the biography of Sir Winston Churchill, Prime Minister of Great Britain, via the following voice clips: "Let us brace ourselves to our duty...this was their finest hour"; "this whipped jackal Mussolinini..."; in 1941: "Now the old lion...stands alone against hunters who are armed with deadly weapons...United we stand, divided we fall. Divided the dark ages return. United, we can save and guide the world."; "...we ask no favours of Hitler...We will mete out to the Germans the measure...that they have meted out to us"; "You (Germany) do your worst and we (England) will do our best."; "...never in the field of human conflict was so much owned by so many to so few."; "It will ever be the glory of this island and its empire that we stood alone...that is our greatest glory." "This is not the end. It is not even the beginning of the end, but it is, perhaps, the end of the beginning." May 8, 1945: "...signing (yesterday) of the act of unconditional surrender of all German land, sea, and air forces in Europe..." ; "The German war is therefore at an end. But let us not forget...the toils and efforts that lie ahead. Japan...remains unsubdued. Advance, Brittania! Long life the cause of freedom. God save the King!" Arthur Hailey, TV and movie writer, talks to Tony Thomas, reporter, about his writing career and his very successful TV script, Flight Into Danger. A tribute to Beniamino Gigli, Italian opera singer, who died a week ago in Italy. Walter Kanitz, broadcaster, pays tribute to Gigli. Clips of Gigli singing are included. A retrospective of 1912 by Bill McNeil, co-host. The following clips are included: Teddy Roosevelt in a U.S. presidential campaign speech; William Howard Taft in a U.S. presidential campaign speech; Woodrow Wilson speaking to American Indians, after his U.S. presidential victory. <1h>