DIY
Free Open Source Compact Car (FOSCC): Build a Street-Legal DIY Car From Salvage Parts for Under $10,000
Open-hardware plans for a street-legal DIY compact car: salvaged 4-cylinder powertrain on a builder-welded steel frame for under $10,000.
Latest
Space
China's Commercial Space Industry Across LEO, GEO, and Cislunar: Guowang, Qianfan, Reusable Launch, and State-Directed Market Structure
China has filed for nearly 200,000 satellites. Two megaconstellations, zero proven reusable rockets, and a market that isn't quite commercial.
Batteries
Sodium-Ion Batteries in 2026: Cost Reality vs. LFP, CATL's Naxtra, and the Hard Carbon Bottleneck
China holds 95%+ of sodium-ion capacity. CATL's Naxtra hits 175 Wh/kg. Yet at 2026 prices, SIB cells still cost more than LFP.
Technoagriculture
Bioshelters in 2026: Passive-Solar Food Production Proven at Scale in China, Unproven in the West
Bioshelters promise year-round food at minimal energy. In 2026, passive solar scales to 810,000 ha in China but stays unproven in the West.
Philosophy
Output Concentration Risk: Why High-Performing Systems Become Fragile
A system is not truly diversified if one crop, supplier, product, technology, or sector generates most of its output.
Engineering
Helical Piles and Screw Foundations: Capacity, Corrosion, and Cost
Helical piles, ground screws, and adjustable piers: load transfer, torque-to-capacity, corrosion, and cost against concrete.
DIY
Discord Spam Bot Protection: 4 Ways to Lock Down Your Server
Spam bots overwhelming your Discord server? Compare four protection options, from custom verification bots to manual vetting.
Energy
Plastoline and Microwave Pyrolysis: Assessing Julian Brown's Plastic-to-Fuel Claims Against the Peer-Reviewed Science
Separating the peer-reviewed science of microwave pyrolysis from the unverified 110-octane, carbon-negative claims behind Plastoline fuel.
Science
Ultrasonic Full-Body Scans, Wellness Spas, and the Science Behind the Spectacle
Ultrasonic CT uses no X-rays, and the prototype runs about 20 minutes, not the 60 seconds claimed. We separate the science from the pitch.
Magnets
Samarium-Cobalt vs Neodymium Magnets (SmCo vs NdFeB): Performance, Cost, and Aerospace Applications
NdFeB offers double the energy product at lower cost; SmCo holds performance to 350°C. When to choose each for aerospace and high-temp design.
Space
What Is SpaceX Starfall? Inside the Disk-Shaped Cargo-Return Capsule SpaceX Just Launched
A briefing on SpaceX Starfall, the disk-shaped reentry capsule now competing with Varda to return cargo from orbit.
Minerals
Global Platinum Supply Chain: Production, Deficit, Market Dynamics, and Strategic Risk
South Africa mines 71% of the world's platinum, a market now in record deficit. We map the supply chain, its risks, and the demand transition.