California Academy of Sciences
Updated: 
Thursday, December 8, 2016 - 10:55pm
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A video presentation from the California Academy of Science: the recent activity of Eyjafjallajökull helps us understand the effects of ash and wind...
California Academy of Sciences
Updated: 
Sunday, December 4, 2016 - 1:18pm
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A video presentation from the California Academy of Science: What is wave energy and how does it work?
Crash Course
Updated: 
Friday, August 12, 2016 - 4:42pm
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Five ways humans are negatively impacting the environment and having detrimental effects on the valuable ecosystem services which a healthy biosphere...
pixabay garbage
Crash Course
Updated: 
Saturday, March 31, 2018 - 11:10am
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Pollution takes many forms - from the simplest piece of litter to the more complex endocrine disruptor - and ultimately, humans are responsible for...
SciShow
Updated: 
Friday, July 15, 2016 - 1:33pm
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Some of the findings of NASA's GRACE mission and how they relate to predictions about sea level rise and climate change.
Crash Course
Updated: 
Friday, July 15, 2016 - 1:33pm
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Today Hank is here to tell us the specifics of why and how human population growth has happened over the past hundred and fifty years or so, and how...
Crash Course
Updated: 
Friday, July 15, 2016 - 1:33pm
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Predation and the many ways prey organisms have developed to avoid it
Crash Course
Updated: 
Friday, July 15, 2016 - 1:33pm
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The hydrologic cycle describes how water moves on, above, and below the surface of the Earth, driven by energy supplied by the sun and wind. The...
Crash Course
Updated: 
Friday, July 15, 2016 - 1:33pm
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Organisms have a need for nutrients (specifically nitrogen and phosphorus) and how they go about getting them via the nitrogen and phosphorus cycles.
SciShow
Updated: 
Saturday, July 30, 2016 - 12:09am
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Scientists have been trying to solve the mystery behind the collapse of the Mayan civilization. Today, a team of anthropologists and climate...