Lesson 22, Darwin in Historical Context
For thousands of years, philosophers and scientists have pondered
the origins of the organisms found on Earth. As far back as the ancient
Greeks, people realized there was a huge variety in the complexity of
the plants and animals inhabiting the environment. Over the centuries,
new discoveries have led to new ideas about how an organism changes
over time. The current, most widely accepted theory among the members
of the scientific community is 's theory of evolution by natural
In this Lesson, we'll look at the major ideas that preceded 's
theory. We'll explore the observations that led to propose his theory
and look at the details of how evolution by natural selection occurs.
Then we'll introduce some of the types of evidence that can be used to
support Darwin's theory.
To begin the lesson, click here
You will need Macromedia Flash Player
to view this lesson.