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DALL·E Environmental Impact (1).webp

Introduction to Web3

Web3 is the coined term for the next generation of the internet, utilising new technologies to fundamentally change how consumers and businesses interact with the internet.

A short history lesson takes us back to the first generation of the internet, Web1. Going all the way back to 1990, the internet was a very different place. With this generation of the internet, users were able to read information from basic HTML and some CSS that started to improve the user experience.

From around 2004 we transitioned into Web2, the important difference in this internet evolution was users were now able to write as well as read when interacting with the internet. Internet users were able to upload their own information for the first time. Social media was born during this era, which is a fantastic example of Web2 and internet user generated content.

Some argue, that Web2.5, an evolution of the basic Web2 generation allowed for transactions to take place online. Building the way for e-commerce and online financial services. This is the world in which we live in right now.

Web3. This is the next phase of the internet. It promises to alter the way that we use the internet with new ownership and transactional models. Utilising blockchain technology, internet users can, for the first time, genuinely own digital assets in a similar way to physical products.

Web3 looks to move away from a centralised digital world and move towards a world where user digital identity can exist.

Key Environmental Challenges

The rapid increase in demand of Web3 technologies has brought about several environmental challenges.

High Energy Demand of Proof-of-Work (PoW)

Proof-of-work (PoW) is one of the earliest and most widely adopted consensus mechanisms in blockchain technology, used by prominent cryptocurrencies such as bitcoin and Ethereum (prior to its transition to Proof-of-Stake). PoW requires network participants, known as miners, to solve complex cryptocurrency puzzles to validate transactions and add new blocks to the blockchain. This process, while ensuring network security and decentralisation, is extremely enery-intensive.

The energy consumption associated with PoW stems from the need for substantial computational power. Miners use powerful hardware, such as Application-Specific Integrated Circuits (ASICs) and high-performance Graphics Processing Units (GPUs), to complete in solving these puzzles. As the difficult of these puzzles increases, so does the energy required to solve them.

E-Waste from Obsolete Hardware

The computational hardware demand associated with maintaining blockchain networks is ever growing, large blockchain mining operations are constantly looking at upgrading their hardware to stay competitive in the blockchain space. This cycle of constantly upgrading evolving hardware in a bid to gain a competitive edge has led to substantial amounts of electronic waste as obsolete equipment is discarded. Many of these components contain hazardous materials like lead, mercury and cadmium, which can leach into soil and water bodies, causing environmental pollution and health hazards.

Resource Extraction for Mining Equipment

Environment Impact of Data Centers

Carbon Emissions form Decentralised Networks

Energy Consumption in Blockchain Networks

The intensive use of advanced computational hardware is linked to the high energy consumption of blockchains - which are critical to Web3 architecture.

Understanding Proof-of-Work (POW) Mechanisms

Comparing Proof-of-Stake (PoS) and Other Consensus Algorithms

Case Study: Energy Usage of Major Blockchains

Metrics for Measuring Blockchain Energy Consumption

Impact of Scaling Solutions on Energy Use

Sustainable Solutions and Innovations

With the benefits of Web3 and our duty to care for the environment, what are the possible solutions and innovations that Web3 and blockchain technologies could deploy to reduce their impact on the environment?