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DIY Hydrogen/Oxygen Generators From Grocery Store Items (HHO Fuel Cells & Split Cell Electrolysis)

I had a lot of fun doing these experiments about 12 years ago.  I ended on some conclusions.  Straight DC is okay, but when you get to playing around with pulsed DC, you can really go crazy.  I ramped my voltage up to about 5KV and was able to adjust my frequency to about 1-2 kHz and able to adjust the duty cycle as I saw fit.  Last set of toying with it was to use pure water with no electrolyte, and having a resistance monitoring system to automatically adjust the duty cycle based on water quality.  And that's when I reached the end of my skill set.  I'll hit it back up when I learn to code.

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William Ackman: Everything You Need to Know About Finance and Investing in Under an Hour | Big Think

Bill Ackman is one of the top investors in the world, and he's said that he's aiming to have "one of the greatest investment track records of all time."  As the CEO of Pershing Square Capital Management, the hedge fund he founded, he oversees $19 billion in assets.
 
But before he became one of the elite, he learned the basics of investing in his early 20s.

This Big Think video is aimed at young professionals just starting out, as well as those who are more experienced but lack a financial background.
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