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2013 Bitcoin For Beginners 1 | R
Bitcoin For Beginners - Learn How To Mine Bitcoin ! - Part 1
http://qindex.info/d.php?c=30#31

2014 Top 10 Bitcoin Facts | R
In November 2011 after a crash a bitcoin was worth 2 dollars US. In November 2013 a bitcoin topped one thousand dollars US in value and briefly was worth more than an ounce of gold. Watchmojo.com
http://qindex.info/d.php?c=30#325

2016 VOA News - Bitcoin | R
The online magazine wired.com reported that the bitcoin was worth about 434 dollars as of January 6. The company Juniper Research says there were 1.3 million users in 2015. It estimates there will be 4.3 million users by the end of the next year.
http://qindex.info/d.php?c=30#312

Encryption | R
Encryption Concepts - Information Security Lesson #6 of 12
http://qindex.info/d.php?c=30#151

Hydrogen From the Sun | R
photovoltaics, electrolysis, exothermic
http://qindex.info/d.php?c=30#3503

Renewable Energy | R
Renewable Energy 101 | National Geographic
http://qindex.info/d.php?c=30#4748

The Mathematics of Quantum Computers | R
The Mathematics of Quantum Computers | Infinite Series
http://qindex.info/d.php?c=30#276

The Peak for Bitcoin? | R
Are We Reaching the Peak for Bitcoin?
http://qindex.info/d.php?c=30#32
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