The record of life on Earth stretches over 3 billion years. Deep time and Earth history are keys to understanding the present.
Earth's climate is a complex system controlled by many factors. This Click and Learn will examine the two most important factors: solar radiation and the composition of Earth's atmosphere.
Explore the changes in oxygen levels throughout Earth’s history and discover their impact on life.
The fossils of transitional creatures were key evidence for Darwin’s evolutionary theory, but none had been found when he published On the Origin of Species. Now, there are many examples of such fossils, which clearly show that big evolutionary leaps consist of many smaller steps.