The youngest parents in the world were aged 8 and 9.
The first American woman to go to medical school was admitted as a joke. Geneva Medical School thought it was joke when Elizabeth Blackwell applied to attend 1847. She graduated in 1849, started her own practice, and opened an infirmary for the poor.
An oyster's sex is fluid.
In one month, the average person consumes about a Lego brick’s worth of microplastic.