James Hutton

Born in Edinburgh in 1726, James Hutton explored several paths before finding the work that made his name. Sources describe him as a Scottish geologist, chemist, naturalist, physician, and agriculturalist, a mix that reflects just how wide his interests were.

Hutton is most closely linked with the principle later called uniformitarianism: the idea that everyday natural processes, working over very long periods, can explain the features of Earth's crust. In papers presented in 1785 and in his Theory of the Earth, published in 1795, he argued for a far older Earth than many people of his time imagined.

Although his writing could be difficult for readers, his ideas became foundational for geology, and he is often remembered as the "father of modern geology." He died in Edinburgh in 1797, but his way of reading the history of the Earth from the rocks themselves had a lasting influence on the science that followed.