0_Apprentice
I have a twin in real life and when people see us together, I get real sick of them asking if we are twins!
1_Wizard
How interesting! A developing fetus is called a singleton if they are alone but a multiple if there is more than one developing!
0_Apprentice
Those embryos sure like multiplying! I wonder if twins are more rarer than triplets?
1_Wizard
Well, the twin birth rate in the US rose from 18.9 to 33.3 for every 1,000 births between 1980 and 2009
0_Apprentice
Wow, do you know what caused the spike in the rate? Is it a genetic thing?
1_Wizard
I'm not sure but the Yoruba people have the highest twin rate in the world possibly because they eat a yam that contains a natural phytoestrogen