The Arithmetic of Sustainability - Part 6: Sunshine Squared

The Arithmetic of Sustainability ← Series Home Our journey through the arithmetic of sustainable energy has established an enormous deficit. Britain’s future electrified lifestyle demands 48 kWh/d per person of clean electricity (120 GW nationally). Domestic renewable resources max out at approximately 18 kWh/d per person due to a “social ceiling” imposed by land-use constraints. Solar imports offer a potential 20 kWh/d per person, but this introduces major geopolitical dependencies. ...

The Designer's Compass - Part 4: Beyond the Bin: Carbon Capture and Nature's Toolkit for Future Materials

The Designer's Compass: Navigating the Sustainable Material Wild West 1 The Designer's Compass - Part 1: The Carbon Equation: Decoding LCA and Tackling Plastic's Waste Crisis 2 The Designer's Compass - Part 2: Threadbare Truths and High-Heat Emissions: Balancing Reuse in Textiles and Metals 3 The Designer's Compass - Part 3: From Forest to Fired Clay: Re-evaluating Renewable and Mineral Resources 4 The Designer's Compass - Part 4: Beyond the Bin: Carbon Capture and Nature's Toolkit for Future Materials ← Series Home Key Takeaways Carbon Capture and Utilization (CCU) transforms CO2 from waste to raw material: Technologies like LanzaTech capture carbon at industrial sites and convert it into new materials, actively removing emissions from production. Carbstone and olivine sand sequester carbon during manufacturing: These alternatives to conventional concrete use waste streams and captured carbon, reversing the massive environmental impact of traditional construction materials. Natural growth processes create strong, durable alternatives to synthetic materials: Mycelium and SCOBY offer water-repellent, tear-resistant properties without chemical processing, revolutionizing packaging design. Chemical recycling breaks plastic waste into core building blocks for remanufacturing: Dissolution, depolymerization, and conversion processes handle mixed and contaminated waste, producing materials equivalent in quality to virgin polymers. Mechanical recycling for flexible packaging removes separation barriers: New processes like those from Omni Polymers enable recycling of multi-layered films without disassembly, unlocking previously unrecyclable waste streams. The Designer’s Compass - Part 4: Beyond the Bin: Carbon Capture and Nature’s Toolkit for Future Materials Sustainable material selection lacks a clear endpoint because technologies constantly evolve and shift boundaries. Designers must look beyond established material categories to find true innovation in circularity. This emerging frontier includes complex new approaches such as harnessing natural growth processes, utilizing captured atmospheric carbon, and fundamentally rethinking plastic recycling technologies. These novel material strategies define the future of sustainable product development. ...

Nuclear and fusion energy

The Arithmetic of Decarburization - Part 7: Beyond Fossil Fuels: The Calculus of Nuclear Fission, Fusion, and 'Clean' Coal

The Arithmetic of Decarburization: A Hard Look at the Energy Revolution ← Series Home The Non-Renewable Options So far, this series has focused on renewable energy: hydro, wind, and solar. But a complete assessment of decarbonization pathways must also consider non-renewable low-carbon sources: Nuclear fission: Mature technology, controversial politics Nuclear fusion: The eternal promise, now perhaps closer Carbon capture and storage (CCS): Making fossil fuels “clean” Hydrogen from fossil sources: Currently the dominant production method ...