In which John Green, Hank Green, and Emily Graslie teach you about our Sun, and the formation of the planets. We're going to focus on the formation and development of the Earth, because that's where people live. You'll learn about the...

Paul Andersen discusses scientific evidence of the origin of life on our planet. He begins with a brief discussion of the age of the earth and ends with the future of humanity. He includes geologic, chemical and molecular data.

In which John Green, Hank Green, and Emily Graslie teach you about our Sun, and the formation of the planets. We're going to focus on the formation and development of the Earth, because that's where people live. You'll learn about the...

The Earth is billions of years old and was once a very hostile place. Eventually, a single cell was formed that evolved and reproduced. What conditions produced this first life on Earth? Biology - Cells And DNA - Learning Points....

Describes the Miller-Urey experiment and how it described the beginning of life on Earth.

We hike in the Australian Outback with Abigail Allwood to visit the most ancient fossils on Earth, and track the imprint of life over space and time with David Grinspoon.

The video discusses the history of the Earth's atmosphere and how it has changed over time. It explains the theories and evidence scientists have used to hypothesize these changes, from the early atmosphere being similar to that of Mars...