The first documented blood transfusion took place using sheep blood in a teenage boy.
Source
The first killer whale calf was born in captivity at Marineland in Los Angeles, California.
Dr. John J. Livingood reported the first synthetic production of a natural form of radium.
The idea of the Big Bang Theory being the creation of the universe was supported by scientists.
The First Zoological Society in the US was formed in Philadelphia.
Researchers identified the earliest known prehistoric ancestor of humans.
