Image reuters.com

Ethereum is the second most valuable cryptocurrency in the world.  

Image reuters.com

Ethereum has just finished a huge software update

Its supporters say this software update will reduce its carbon footprint.

Image reuters.com

Image reuters.com

The long-awaited makeover, called "The Merge," is finally here.

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The Ethereum Foundation says that the software update will cut Ethereum's energy use by nearly 99.5%.

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The Ethereum Foundation is a non-profit group that supports cryptocurrencies and technologies that work with them.

The Merge is the coming together of the original Ethereum Mainnet and a different blockchain called the Beacon Chain.

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image cryptoslate

Proof-of-work was the system that both ethereum and bitcoin used to work.

image livemint.com

Very powerful energy consuming computers solved these software puzzles.

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The merge will save a lot of energy.