Exploring the protective systems that keep the power grid from self destructing.

We usually think of the power grid in terms of its visible parts: power plants, high-voltage lines, and substations. But, much of the complexity of power grid comes in how we protect it when things go wrong. When your power goes out, it’s easy to be frustrated at the inconvenience, but consider also being thankful that it probably means things are working as designed to protect the grid as a whole and ensure a speedy and cost-effective repair to the fault.

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Writing/Editing/Production: Grady Hillhouse
Director: Wesley Crump

Tonic and Energy by Elexive is licensed under a Creative Commons Attribution License
Source: https://www.youtube.com/watch?v=U6fBPdu8w9U

This video is sponsored by Hello Fresh.

Discussing some of the fascinating engineering that goes into overhead electric power transmission lines.

In the past, power generating plants were only able to serve their local areas. As power plants grew larger and further away from populated areas, the need for ways to efficiently move electricity over long distances has become more and more important. Stringing power lines across the landscape to connect cities to power plants may seem as simple as connecting an extension cord to an outlet, but the engineering behind these electric superhighways is more complicated and fascinating than you might think.

-Patreon: http://patreon.com/PracticalEngineering
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Writing/Editing/Production: Grady Hillhouse

Tonic and Energy by Elexive is licensed under a Creative Commons Attribution License
Source: https://www.youtube.com/watch?v=U6fBPdu8w9U

This video is sponsored by Hello Fresh.

Continuing the series on the power grid by diving deeper into the engineering of large-scale electricity generation.

The importance of electricity in our modern world can hardly be overstated. What was a luxury a hundred years ago is now a critical component to the safety, prosperity, and well-being of nearly everyone. Generation is the first step electricity takes on its journey through the power grid, the gigantic machine that delivers energy to millions of people day in and day out. So how does it work?

-Patreon: http://patreon.com/PracticalEngineering
-Website: http://practical.engineering

Writing/Editing/Production: Grady Hillhouse

This video is sponsored by Hello Fresh.

Untangling the various equipment you might see in an electrical substation.

In many ways, the grid is a one-size-fits-all system - a gigantic machine to which we all connect spinning in perfect synchrony across, in some cases, an entire continent. On the other hand, our electricity needs, including when we need it, how much we need, and how reliably it should be delivered vary widely. Substations play a critical role in controlling and protecting the power grid.

-Patreon: http://patreon.com/PracticalEngineering
-Website: http://practical.engineering

Writing/Editing/Production: Grady Hillhouse
Animation: Stephanie White, Connor Claver, Dayan D’Aniello

Tonic and Energy by Elexive is licensed under a Creative Commons Attribution License
Source: https://www.youtube.com/watch?v=U6fBPdu8w9U

This video is sponsored by NordVPN.

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This is a journey form the smallest manmade hole - by removing just one single atom - to the edge of the universe. Man has finally succeeded in making the ancient dream of Greek philosophers come true - to «see» an atom. In another direction we also seem to have unlimited sight: the «Hubble Telescope» grants us a glimpse of the remotest galaxies. This documentary assesses the limits of human perception, taking us on a journey through time from the quasars, millions of light-years away from earth, via the wonders of our populated world to the depths of human genotype and the structure of a single atom. «Limits of Perception» promises a filmic journey of exploration from micro- into macrocosm.

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We perceive time in terms of seconds -- the length of a heartbeat. We can't even imagine events that unfold over several days and years or be aware of elementary particles that flash into existence for less than a billionth of a second without high-tech camera equipment and exceptional filming techniques.

Researchers have offered a chemical explanation for sex change in a tropical fish. ↓↓More info and references below↓↓

For a tropical fish called the bluehead wrasse, sex isn’t always permanent. When a group of the fish loses its dominant male, the biggest female rapidly changes sex, taking on distinctive male coloring and producing mature sperm in as little as 8 days. Although this change is well documented, the molecular mechanisms that drive it have remained unclear. Now, an international group of researchers has offered a chemical explanation for the transformation after analyzing tissue samples from transitioning fish.

Read more:

Stress, novel sex genes, and epigenetic reprogramming orchestrate socially controlled sex change | Science Advances
https://advances.sciencemag.or....g/content/5/7/eaaw70

Music: “English Country Garden” by Aaron Kenny.

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The Effect of the 4th Industrial Revolution With Ambassador Makeda Antoine | Pan African Talks

What impact did the 4th Industrial Revolution have on us?
Dr Bunmi Oyinsan along with Ambassador Makeda Antoine explains to us in this video how we were affected by the 4th industrial revolution.

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What might seem as waste to Africa’s many herbivores is gold to the Dung Beetle who needs animals dung for its species survival. Not only do these dung beetles gather and roll as much dung as possible but they will even resort to high jacking another’s ball, which it has spent many hours perfecting. But not without a fight.

Driver ants have a gruesome reputation for killing everything in their path, from defenseless worms to a full-size scorpion.
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Superswarm (2009)
When animals swarm they create a super-organism of incredible power. They can attack our food supplies, immobilise our transport systems, undermine our cities and even attack our energy supplies. They can stop us in our tracks. Using state-of-the-art photography, Superswarms reveals the collective intelligence behind the animal invasions, and how man fights back.

Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of entertaining and thought-provoking natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.

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