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The History of Apples (Encore)
Episode 1808
One of the most popular fruits in the world are apples.
Apples are associated with the Garden of Eden, pleasing your teacher, and the story of Snow …
1 year, 4 months ago
Desalination
Episode 1807
Seventy percent of the Earth’s surface is covered with water… and the vast majority of it is useless for consumption or agriculture.
This problem ha…
1 year, 4 months ago
Autogyros
Episode 1806
We are all familiar with things that fly in the air. Hot air balloons, dirigibles, blimps, airplanes, and helicopters.
However, there is another cate…
1 year, 4 months ago
Transuranium Elements (Encore)
Episode 1805
If you take a look at the periodic table of elements, you will notice something interesting.
Go to the bottom and take a look at any element over, s…
1 year, 4 months ago
Frederick Douglass
Episode 1804
In 1818, the man who would go on to become one of the greatest leaders in the cause against American slavery was himself born into slavery.
At the ag…
1 year, 4 months ago
Blue
Episode 1803
Colors are something that we are all familiar with. The colors are among the first things we teach children.
What if I were to tell you not every cu…
1 year, 4 months ago
Operation Dragoon
Episode 1802
In the summer of 1944, the Allied forces planned an audacious amphibious landing on the beaches of France.
It involved hundreds of ships, over a hund…
1 year, 4 months ago
All About Hair
Episode 1801
If you are listening to me speak these words and can understand what I’m saying, then you are a human being.
If you are a human being, you are also a …
1 year, 4 months ago
The Year 1800
Episode 1800
In the year 1800, the last year of the 18th century, the world was on the precipice of radical change.
The scientific revolution, the agricultural r…
1 year, 5 months ago
How the Ancients Made Fire
Episode 1799
One of the most critical developments in the course of human history was the control of fire.
Without fire, we probably wouldn’t have even reached th…
1 year, 5 months ago