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This week on Crash Course Big History, Emily is talking about process of human evolution, and the knack for innovation that has allowed humans to become so dominant on the Earth.

Unit 18: Evolution and the tree of life About this unit This unit is part of the Biology archive. Browse videos and articles by topic. For our most up-to-date, mastery-enabled courses, check out High …

No, we really really did not evolve from monkeys. John and Hank Green explain this and lots of other things related to human evolution. Learn about the major milestones of our ancestors, from the first …

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It turns out, we couldn't tell all of the 13.8 billion years of the history of the universe in 10 Crash Course Episodes. So, Big History host Emily Graslie has returned to add 6 more episodes that look at why …

Learn AP Biology using videos, articles, and AP-aligned multiple choice question practice. Review the fundamentals of biochemistry, cell biology, genetics, evolution, and ecology, and develop scientific …

While extinctions happen all the time and are an essential part of evolution, if certain species are removed from an ecosystem, the entire house of cards can come crashing down, threatening even …

Biology archive Biology archive The biology archive contains legacy biology content, and is not being updated with new content. For our most up-to-date, mastery-enabled courses, check out Middle …

In this course, you'll learn world history from the earliest civilizations to the modern world. In this story, geography, religion, trade, and politics have bound peoples and nations together — and torn them …