Evidence for Evolution

The theory of evolution explains how species change over time through a process called natural selection. According to this scientific theory, organis

Giant tortoises and Darwin’s finches are two famous examples that helped shape the theory of evolution. Charles Darwin observed these animals on the G

Charles Darwin’s theory of evolution was shaped by the ideas, observations, and discoveries of others. While traveling on the HMS Beagle, Darwin read

Why do some animals blend into their surroundings while others stand out? Why do certain traits, like a cheetah's speed or a polar bear’s thick fur, h

Have you ever wondered why some animals have spots, stripes, or specific colors? These visible traits, called phenotypes, are shaped by natural select

Fossils are preserved remains or traces of organisms that lived in the past. They provide important evidence for understanding the history of life on

The fossil record is a collection of fossils that provides a timeline of life on Earth. It shows how different groups of organisms have changed over t

How do we know that species change over time? Scientists use many types of evidence of evolution to show how living things have adapted and evolved. T

Did you know that the embryos of fish, birds, and humans all look surprisingly similar in their early stages? This is because many animals share commo

Did you know you share over 98% of your DNA with a chimpanzee? Or that humans have things in common with bananas and even bacteria? That’s because all

The geologic time scale is a system scientists use to describe the history of the Earth. It organizes Earth's 4.6-billion-year history into different

The evolution of major life forms tells how life developed from simple organisms to complex creatures over billions of years. It reveals key changes t