DT7: Environmental, Ecological and Social Issues
Sustainability, circular economy, the 6 Rs, life cycle analysis, carbon footprint, fair trade, planned obsolescence, social and ethical design considerations.
Environmental, Ecological and Social Issues
Sustainability, circular economy, the 6 Rs, life cycle analysis, carbon footprint, fair trade, planned obsolescence, social and ethical design considerations.
Key Fact: The 6 Rs: Rethink, Refuse, Reduce, Reuse, Recycle, Repair — a hierarchy for sustainable design decisions, from most to least effective.
Key Fact: Circular economy: products designed for disassembly, material recovery and reuse — eliminates waste, contrasts with linear 'take-make-dispose' model.
Key Fact: Life Cycle Analysis (LCA): assesses environmental impact from raw material extraction through manufacture, use and disposal — cradle-to-grave.
Key Fact: Planned obsolescence: designing products with limited useful life to drive repeat purchases — ethical concern, contributes to e-waste and resource depletion.
Key Fact: Carbon footprint: total greenhouse gas emissions from a product's full life cycle — designers reduce it through material choice, local sourcing, efficient manufacturing and recyclability.
📋 Key Vocabulary and Concepts
For Environmental, Ecological and Social Issues, you must know:
- Sustainability
- Circular economy
- Linear economy
- The 6 Rs
- Life Cycle Analysis (LCA)
- Carbon footprint
- Planned obsolescence
- Fair trade
- E-waste
- Cradle-to-grave
- Cradle-to-cradle
- Biodegradable
- Recyclate
- Material miles
- Social impact
❓ Practice Questions
Q1: Explain the difference between a linear economy and a circular economy, using a smartphone as an example.
Q2: Describe how a designer could apply the 6 Rs to the development of a new office chair.
Q3: Discuss the ethical issues surrounding planned obsolescence in consumer electronics.
✅ Answers
- Linear: extract raw materials, manufacture phone, use for 2-3 years, dispose in landfill — resources flow one way. Circular: design phone for modular repair (Fairphone), use recycled aluminium and rare earths, offer trade-in for refurbishment, design for disassembly so components can be recovered — resources cycle continuously.
- Rethink: does the chair need to be new or can existing chairs be refurbished? Refuse: avoid unnecessary packaging and toxic finishes. Reduce: minimise material use through FEA-optimised structure. Reuse: design modular components that can be replaced individually. Recycle: use mono-materials (single polymer type) for easy recycling. Repair: standard fasteners not adhesives, so parts can be swapped.
- Arguments for: technological progress, affordability (cheaper to replace than repair), consumer demand for new features. Arguments against: environmental damage (e-waste, rare earth mining), consumer exploitation, loss of right to repair, resource depletion. A balanced answer considers both perspectives and reaches a justified conclusion about responsible design.
🎯 Exam Tips
- Always define sustainability before applying it — 'meeting present needs without compromising future generations' ability to meet theirs'
- Use specific product examples rather than abstract principles
- The 6 Rs are a hierarchy — Rethink is more effective than Recycle
📝 Exam Technique
D&T Exam Tips:
For sustainability questions, structure your answer around the 6 Rs or LCA stages. Always conclude with a justified design recommendation. Examiners reward specific examples (name a product, material or company) over vague generalisations.
For sustainability questions, structure your answer around the 6 Rs or LCA stages. Always conclude with a justified design recommendation. Examiners reward specific examples (name a product, material or company) over vague generalisations.
⚠️ Common Errors
Watch Out!
Students often make mistakes here. Wrong: Recycling is the most important thing a designer can do to protect the environment. Correct: Recycling is the LAST of the 6 Rs — it requires energy, reduces material quality (downcycling), and does not reduce initial consumption. Rethink (do we need this product?), Refuse (avoid unnecessary materials), and Reduce (use less material) are far more effective because they prevent waste from being created in the first place. Designers should prioritise higher Rs before considering recycling.
✍️ Model Answer
Full-Mark Response
Evaluate the environmental impact of disposable coffee cups and propose a sustainable alternative using the circular economy model.
A grade 9 response will: analyse the current cup (paper lined with polyethylene — cannot be recycled easily, 2.5 billion used annually in UK); calculate the LCA impact (tree harvesting, waterproof lining manufacture, transport, landfill); apply circular economy principles — design a reusable cup system (e.g. deposit-return scheme with durable recycled polypropylene cups, collected, washed and redistributed); discuss the 6 Rs applied; consider social barriers (convenience culture) and economic factors (initial cost vs long-term savings); reference real examples (Frugalpac, KeepCup, deposit schemes); conclude with a justified proposal that balances environmental benefit with practical adoption.
📊 AO Deep Dive
Assessment Objective Analysis
AQA D&T 8552: Written exam 50% + NEA 50%. AOs: AO1 Recall (20%), AO2 Apply (30%), AO3 Analyse & evaluate (50%). For grade 9, demonstrate perceptive understanding of sustainability trade-offs, fluent use of LCA/6 Rs frameworks, and sophisticated evaluation of environmental, economic and social factors.
📝 Exam Questions by Topic
🎬 Video Resources
Detailed Notes
The 6Rs and Circular Economy
The 6Rs framework (Rethink, Refuse, Reduce, Reuse, Recycle, Repair) provides a hierarchy of strategies for minimising the environmental impact of design and consumption. Rethink challenges whether a product is needed at all. Refuse means rejecting unnecessary consumption. Reduce minimises material and energy use in production and packaging. Reuse extends product life through design for disassembly and modularity. Recycle processes materials into new products at end-of-life. Repair enables maintenance rather than replacement. UK legislation increasingly supports circular economy principles, with the Environment Act 2021 establishing extended producer responsibility schemes that make manufacturers accountable for the full lifecycle of their products.
The Ellen MacArthur Foundation, based on the Isle of Wight, is a global leader in promoting the circular economy, which aims to eliminate waste by designing products for longevity, repairability and material recovery. Unlike the linear 'take-make-dispose' model, the circular economy keeps materials in use at their highest value for as long as possible. UK companies like Circular&Co design products from recycled materials that are themselves designed for future recycling, creating closed-loop material flows. GCSE students must integrate 6Rs thinking into their NEA portfolios, demonstrating how their design decisions reduce environmental impact throughout the product lifecycle.
Example
A student designing a reusable coffee cup specifies a modular construction with a stainless steel body (durable, infinitely recyclable), a silicone band (replaceable when worn), and a polypropylene lid (dishwasher-safe, recyclable). They contrast this with disposable paper cups, which are lined with polyethylene and cannot be recycled in standard UK waste streams, resulting in 2.5 billion cups entering UK landfill annually.
Carbon Footprint and Embodied Energy
A product's carbon footprint measures the total greenhouse gas emissions (expressed as CO2 equivalent) across its entire lifecycle. Embodied energy is the total energy consumed in extracting raw materials, processing, manufacturing, transporting and disposing of a product. Aluminium has very high embodied energy (approximately 170 MJ/kg for virgin material) because bauxite smelting requires enormous electrical input, whilst recycled aluminium requires only about 5% of this energy. Wood has relatively low embodied energy and actually sequesters carbon during tree growth, making it carbon-negative over its lifecycle. GCSE students should be able to compare the embodied energy and carbon footprint of different material choices in their NEA evaluations.
Transport miles contribute significantly to a product's carbon footprint. A product manufactured in China and shipped to the UK generates approximately 3 tonnes of CO2 per tonne of freight by sea container. Air freight is approximately 40 times more carbon-intensive. Sourcing materials and manufacturing locally in the UK reduces transport emissions and supports the domestic economy, though it may increase production costs. The UK's commitment to net-zero by 2050 is driving policy changes, including carbon border adjustment mechanisms that will price imported carbon, potentially making UK-manufactured products more competitive. Students who understand these economic and environmental trade-offs can produce the nuanced evaluations that examiners reward.
Example
A student designing a kitchen utensil set compares bamboo handles (grown in China, shipped 10,000km, embodied energy 4 MJ/kg) with British ash handles (grown in Kent, transported 150km, embodied energy 3 MJ/kg). Despite bamboo's faster growth rate, the UK ash has lower total carbon footprint due to reduced transport emissions, demonstrating lifecycle thinking.
Social Impact and Ethical Design
Design decisions have social implications beyond environmental impact. Fairtrade certification ensures producers in developing countries receive fair prices and work under safe conditions. The UK Fairtrade mark is recognised by over 90% of consumers and covers products from cotton to gold. Ethical sourcing requires designers to investigate supply chains, avoiding materials produced through exploitative labour or environmental destruction. Conflict minerals (tin, tungsten, tantalum, gold) from the Democratic Republic of Congo fund armed groups, and the EU Conflict Minerals Regulation (retained in UK law) requires due diligence from importers.
Inclusive design ensures products are accessible to the widest possible range of users, regardless of age, ability or circumstance. The UK's Equality Act 2010 requires reasonable adjustments, and inclusive design principles go beyond legal compliance to create genuinely usable products. The Government's Centre for Accessible Design at the University of Cambridge promotes inclusive design in UK product development. Socially responsible design also considers cultural sensitivity, avoiding appropriating cultural symbols or creating products that perpetuate stereotypes. GCSE students should demonstrate awareness of these social and ethical dimensions in their NEA research and evaluation, showing that good design serves people and communities as well as commercial objectives.
Example
A student designing a kitchen tool for elderly users applies inclusive design principles: enlarged grips for arthritic hands (OD of 35mm, consistent with research on comfortable grip diameters), contrasting colour indicators for users with visual impairments, and lightweight materials (polypropylene, density 905 kg/m3) to reduce fatigue during use. They test the prototype with target users and document feedback in their NEA.
Comparison
6Rs Strategy Comparison
| Strategy | Definition | Product Example | Impact Level | UK Policy Link |
|---|---|---|---|---|
| Rethink | Challenge if product is needed | Do nothing / service design | Highest (prevents waste) | Environment Act 2021 |
| Refuse | Reject unnecessary consumption | Decline single-use packaging | Very high | Plastic straw ban |
| Reduce | Minimise material and energy use | Lightweighting packaging | High | Packaging Regulations |
| Reuse | Extend product life repeatedly | Refillable containers | Medium-high | UK Plastics Pact |
| Recycle | Process materials into new products | rPET from plastic bottles | Medium | 70% paper/board recycled |
| Repair | Enable maintenance over replacement | Modular phone components | Medium | Right to Repair directive |
Extended Practice
Q1: Apply the 6Rs framework to evaluate the environmental impact of disposable coffee cups in the UK, proposing specific strategies at each level from Rethink to Repair. Support your analysis with data on UK cup waste and reference the Ellen MacArthur Foundation's circular economy principles.
Q2: Compare the carbon footprint of a product manufactured in the UK from locally sourced materials with an identical product manufactured overseas and shipped to the UK. Evaluate the trade-offs between production cost, transport emissions and material quality that a GCSE student should consider in their NEA evaluation.
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