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Crash Course
Evolutionary History: The Timeline of Life: Crash Course Biology #16
Humans may have been around for a long time, but life has existed for way longer. In this episode of Crash Course Biology, we’ll journey through deep time to uncover the history of life on Earth. We’ll explore the big, game-changing...
PBS
How Evolution Works (And How We Figured It Out)
As a scientific concept, evolution was revolutionary when it was first introduced. With the help of all three of our hosts and the Smithsonian National Museum of Natural History’s new Deep Time Hall, we’ll try to explain how evolution...
Bozeman Science
Unit 2 Review - Speciation
Paul Andersen reviews the major concepts within the second unit of the new AP Biology framework. He starts by describing how life is organized into three domains. He explains how the history of life on the planet is...
Bozeman Science
Stickleback Evolution
Paul Andersen describes microevolution and macroevolution in the stickleback fish of Loberg Lake. He describes how anadramous fish repopulated the lake after poisoning and adapted to the new environment through natural selection. He...
Professor Dave Explains
Phylogeny and the Tree of Life
Alright, we've learned about how unicellular organisms came to be, how they became multicellular, and then from those how evolution by natural selection produced all the species in the world today. But there are so many! Millions and...
Bozeman Science
Stickleback Evolution
About 70 percent of the genes of the stickleback fish are the same as humans. In the video, scholars further explore the stickleback fish and its history, from being removed from Loberg Lake to their change and comeback. Over time, these...
Be Smart
The Impossible Hugeness of Deep Time
Can we really grasp how old we are? Part of a larger series, the humorous video demonstration shows how humans fit into the history of Earth and just how long ago life formed. Viewers explore a timeline that identifies major markers in...
Crash Course
Evolution: It's a Thing
Evolution is a theory but thank goodness gravity is a law. What is the theory of evolution and what are the facts supporting this theory? Here's a short video that explains how fossils, homologous structures, biogeography, and direct...
Bozeman Science
Bozeman Science: Stickleback Evolution
Paul Andersen describes microevolution and macroevolution in the stickleback fish of Loberg Lake. He describes how anadramous fish repopulated the lake after poisoning and adapted to the new environment through natural selection. He also...