Life Over Time
Life on Earth is constantly changing. Over millions of years, organisms have adapted, diversified, and given rise to the incredible biodiversity we see today. In this course, you’ll explore the forces that drive these changes and discover how new species emerge and connect within the grand Tree of Life.
You’ll begin with Natural Selection & Evolution, where you’ll see how variation, adaptation, and survival shape species across generations. From there, you’ll move into Speciation & The Tree of Life, which reveals how new species form and how scientists classify all living things within the broader story of evolution.
You’ll learn how to:
Explain how natural selection drives evolutionary change.
Identify the role of variation and adaptation in survival.
Describe the main mechanisms of speciation (allopatric, sympatric, etc.).
Understand the Tree of Life and how scientists classify organisms.
Appreciate the connections between biodiversity, conservation, and evolution.
By the end of this course, you’ll see evolution not just as history, but as a living, ongoing process that continues to shape life around us.
Natural Selection & Evolution
Explore how life adapts and transforms across generations. This lesson explains Charles Darwin’s theory of natural selection, how genetic variation shapes survival, and why evolution is the key to understanding the diversity of species on our planet.
Speciation & The Tree of Life
Discover how new species arise and how scientists classify the incredible diversity of life on Earth. This lesson explores the processes of speciation, the branching patterns of evolution, and how all organisms are connected within the great Tree of Life.