When Was the Theory of Evolution?


Martha Robinson

The theory of evolution has been a topic of discussion and debate for centuries. It is a scientific explanation of how species change over time through the process of natural selection. While the concept of evolution has been around for a long time, it wasn’t until the 19th century that the theory began to take shape.

The Early Ideas

The concept that living organisms change over time dates back to ancient Greece. However, it wasn’t until the 18th century when Jean-Baptiste Lamarck introduced his theory of inheritance of acquired characteristics that the idea gained traction. Lamarck’s theory suggested that changes an organism acquired during its lifetime could be passed down to its offspring.

The Birth of Evolutionary Theory

It was Charles Darwin who is credited with developing the modern theory of evolution. Darwin’s travels and studies on the Galapagos Islands in the 1830s provided him with valuable insights into how species adapt and change over time. Darwin’s book “On The Origin Of Species,” published in 1859, presented his theory on how natural selection drives evolutionary change.

  • Natural Selection: The process by which organisms best suited to their environment are more likely to survive and reproduce.
  • Variation: The genetic diversity within a population provides organisms with different traits that may be advantageous or disadvantageous in their environment.
  • Inheritance: The passing on of advantageous traits from one generation to another.

Controversy Surrounding Evolution

While Darwin’s theory was revolutionary in its time, it was met with opposition from many people who believed in creationism. Creationism is the belief that life on Earth was created by a divine being or beings rather than through natural processes.

Today, over 150 years since the publication of “On The Origin Of Species,” the theory of evolution remains a topic of debate. However, it is widely accepted by the scientific community and has been supported by numerous studies and discoveries.


In conclusion, the theory of evolution has evolved over centuries, starting with early ideas and culminating in Darwin’s groundbreaking work. While it remains a topic of controversy, it is an essential element in our understanding of life on Earth and how it has changed over time.