Bitcoins is one of the many cryptocurrencies which have gained traction worldwide. Despite the demand, there is a lot of hard work and energy which goes into making these cryptocurrencies. This energy is normally made available in the form of coal which increases the CO2 emissions and the carbon footprint for the owner who holds these currencies.
Articles:
- http://flip.it/ZJK0B6
- http://www.govtech.com/budget-finance/Whats-the-Carbon-Footprint-of-Bitcoin.html
Video on Carbon Footprint:
Lateral Thinking 
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