Peeing on Plants

Ancient Egyptians in the 1350s were the first to record a pregnancy test that had a basis in science. A papyrus from the time describes how an expectant woman could pee on a barley and wheat seed over a series of days and if it grew then the woman was pregnant. It is possible that higher levels of estrogen in the urine of pregnant women encouraged plant growth. In 1963, a study was done to test this method. the study found that about 70 percent of the time pregnant women's urine caused plants to show growth while men's and non pregnant women's urine did not. If you are interested in the study you can find it here.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1034829/?page=2