This short looks at the following questions: How would you act as an expectant father? How many greeting cards are sold in the USA each year? Why do indoor radiators make that pounding noise? Why do mammals yawn?
1951
1966
1972
1901
1917
2015
1989
1993
1943
1946
2002
2013
1941
2016
2025
1929
2018
1934
2004
1944
