Pierre Curie was born May 15, 1859 in France in Paris. Pierre's dad taught him science and math at a very young age. He entered the Faculty of Science later on, that was where he earned his degree in 1878. With little money to get by he had to discontinue school, so Pierre became a laboratory instructor, so he could raise enough money to continue his research. Later on he earned his graduate degree and became a professor of physics in 1895.

That same year he married Marie Sklodowska she was also a scientist, after their marriage she became known as Marie Curie. The Curie family had two children Irene, and Eve. Pierre studied crystallography that helped him to discovered piezoelectric effects. His discovery displayed that "the magnetic properties of a given substance change at a specific temperature" this was known as the curie point. Pierre also studied radioactive substances with his wife Marie.

"The Curie family went on to describe many of the novel properties of radium." Pierre and his wife were rewarded prizes in physics because of their work in radiation in 1903. They were also rewarded the Davy Medal of the Royal Society of London in 1903. He was voted into the Academy of Sciences. Pierre died in Paris, France in 1906.

Georges Cuvier was born August 23, 1769 in France. When Georges was a child he was home schooled by his mother. This helped him to be at the top of his class. In 1784 he went to Carolinian Academy located in Stuttgart Germany. When he graduated in 1788 he became a tutor for a family in Normandy, this helped him to get out of the French Revolution. This also gave Georges time to study and become a Naturalist. In 1804 he met Anne Marie, then soon married her. Anne became widowed when the French Revolution was in action. They had four children three of the kids' genders are unknown. Only one child made it out of babyhood. Georges Cuvier was very talkative about the theory of evolution, he published work called Elementary Survey of the Natural History of Animals. A lot of the zoologist in his time period believed the structure of an animal would tell them where the animal lived and it's diet. But Georges believe otherwise, he thought that the organs in the animal told you where they lived and their diet. He also studied fossils, his studies lead him to be one of the first scientist to make a classification system for the animals. Georges Cuvier died May 13, 1832.