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What’s in the Trunk? with Sir David Attenborough | The Green Planet | BBC Earth

AdultsEducationLifeNature...
Don’t try this with your normal headphones, but you can actually listen to the inside of a tree! Listen and watch along as Sir David Attenborough discovers the amazing things going on inside our trunky friends.

Colonialism: Crash Course Geography #39

AdultsEducationHumanWorld...
Empire, imperialism, and colonialism are all interrelated tactics of geopolitics that are used to achieve similar goals of one state maintaining economic, political, or even cultural dominance over other territories.

Most People Don't Know How Bikes Work

AdultsConstructionCreativityScience...
Why are bicycles stable? The most common answer is gyroscopic effects, but this is not right. This video was sponsored by Kiwico.

Auxiliary Verbs (Part 2)

AdultsGrammarSmrt LiveEducation...
Mark explains in detail when we need to use "do" as an auxiliary verb. This video is for students at an upper-intermediate level.

The Saudi Culture

AdultsCultureEqualityWorld...
Culture Day At Canadian College of English Language

Save the Troy Library "Adventures In Reverse Psychology"

AdultsPsychologyEducationPolitics...
"The city of Troy, Michigan was facing a budget shortfall, and was considering closing the Troy Public Library for lack of funds.

Auxiliary Verbs (Part 1)

AdultsGrammarSmrt LiveEducation...
Mark explains in detail when English requires "be" as an auxiliary verb. This video is for students at an upper-intermediate level.

What Dinosaurs ACTUALLY Looked Like?

AdultsHistoryLifeNature...
The past is a vast and mysterious land that begins at the big bang and ends in the present, expanding with each passing moment. It is the home of everything that came before, the key to understanding our present.

How to Photograph the Night Sky | National Geographic

AdultsCreativityEducationHuman...
NASCAR driver and photography enthusiast, Bubba Wallace, and National Geographic Photographer Babak Tafreshi demonstrate how to take nighttime photos of the sky. Paid Content for Columbia.

Earth's mysterious red glow, explained - Zoe Pierrat

AdultsEducationScienceSpace...
Explore the phenomenon and uses of chlorophyll fluorescence, a small amount of light emitted by plants during photosynthesis.

The Place Where Time Flows Backwards

AdultsEducationScienceSpace...
People all around the world tend to represent time via space, but there’s no consensus on which way time goes.

This Virus Shouldn't Exist (But it Does)

AdultsBiologyEducationScience
Hidden in the microverse all around you, there is a merciless war being fought by the true rulers of this planet, microorganisms.

The secret society of the Great Dismal Swamp - Dan Sayers

AdultsEducationHistoryHuman...
Uncover the history of the hidden communities that inhabited the Great Dismal Swamp in North America.

The Largest Black Hole in the Universe - Size Comparison

AdultsEducationScienceSpace
The Black Hole story continues with our Black Hole merch, spanning the whole range from somewhat bonkers to more serious.

The Simplest Math Problem No One Can Solve

AdultsEducationHistoryMath...
The Collatz Conjecture is the simplest math problem no one can solve — it is easy enough for almost anyone to understand but notoriously difficult to solve.

The Longest-Running Evolution Experiment

AdultsData ScienceEducationScience
Special thanks to Prof. Richard Lenski and team for showing me around the lab — it is an honor to be able to witness and document such a historic science experiment.

What few people know about the program that "saved" America - Meg Jacobs

AdultsEducationHumanWorld
Explore the successes and failures of FDR’s New Deal, a set of legislation during the Great Depression which aimed to save the US economy.