Seven And A Fifth Degrees
Broadcast: February 15, 1955
Added: Feb 17 2017
Suppose someone asked you what is the circumference of the earth, would you know the answer? Is there somewhere in your head which says 25,000 miles around? Well that's all well and good, but suppose no-one had measured it first? How would you find out the circumference of the earth? This is the story of the first man who did - some 2000 years ago - and he never left town to do it!