This 10-minute video lesson looks at the beginnings of life on Earth. …
This 10-minute video lesson looks at the beginnings of life on Earth. Life and photosynthesis start to thrive in the Archean Eon. [Cosmology and Astronomy playlist: Lesson 39 of 85]
This 10-minute video lesson contiues to discuss the beginnings of life on …
This 10-minute video lesson contiues to discuss the beginnings of life on Earth. The ozone layer and eukaryotes show up in the proterozoic eon. It includes the great oxygenation event (oxygen catastrophe). [Cosmology and Astronomy playlist: Lesson 40 of 85]
This 10-minute video lesson continues to discuss the beginnings of life on …
This 10-minute video lesson continues to discuss the beginnings of life on Earth. It looks at the Cambrian explosion and biodiversity in the Phanerozoic Eon. [Cosmology and Astronomy playlist: Lesson 41 of 85]
This 10-minute video lesson discusses chronometry and the relatively recent changes in …
This 10-minute video lesson discusses chronometry and the relatively recent changes in our ability as a species to shine light on our deep past. [Cosmology and Astronomy playlist: Lesson 81 of 85]
This 2-minute video lesson provides a correction for the previous video on …
This 2-minute video lesson provides a correction for the previous video on the radious of the observable universe. [Cosmology and Astronomy playlist: Lesson 9 of 85]
This 10-minute video lesson continues the discussion of cosmic background radiation. It …
This 10-minute video lesson continues the discussion of cosmic background radiation. It looks at the redshift of the cosmic background Radiation. [Cosmology and Astronomy playlist: Lesson 12 of 85]
This 13-minute video lesson presents a framework for thinking about how many …
This 13-minute video lesson presents a framework for thinking about how many detectable civilizations are out there. [Cosmology and Astronomy playlist: Lesson 59 of 85]
This 9-minute video lesson considers why we even care about the Drake …
This 9-minute video lesson considers why we even care about the Drake Equation. It ponders the fraction of a planet's life when a civilization might be detectable. [Cosmology and Astronomy playlist: Lesson 60 of 85]
This 6-minute video lesson takes a shot at estimating the number of …
This 6-minute video lesson takes a shot at estimating the number of detectable civilizations in the Milky Way Galaxy. [Cosmology and Astronomy playlist: Lesson 62 of 85]
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