Orrin
The planet turns twice — and every flat plan on your desk pays for it
Precession, obliquity and the theorem that no map keeps both angle and area. Why Zurich offices should set the CRS to EPSG:2056, not Web Mercator 3857.
The Great Green Wall Fights an Orbit, Not Just a Desert
The Sahara moves on a 21,000-year sun cycle. Why the Great Green Wall plants against the sky — and the two-line solar check every façade study owes itself.
Rivers Run the Cheapest Network There Is — And So Should Your Riser Diagram
Hack's law says a river's length scales with drainage area^0.6 — the same optimal-transport logic that should govern your riser, duct and load-path trees.
Singapore's 50% green cover: which numbers are physics, and which are bought
Singapore's biophilic city hits ~50% green cover. Which numbers are transferable physics and which are bought with a governance model no European practice owns.
The awake city: six verbs of machine intelligence, and the one it can't compute
From WeatherNext's cyclone forecasts to Sentinel-2 CNNs and OSMnx walksheds — the six verbs a city learns, and the one containment it can't compute.
PACE, Precession, and the Sun Angle Already Written Into Your Facade
NASA's PACE and SPHEREx read Earth as a spectrum, not a picture. The projection and precession math behind them is the same math that fixes your facade's sun angle.
Earth Intelligence Is a Projection Choice: What Copernicus's 24-Hour Delay Means for Your Site Datum
The EU's 24-hour delay on Copernicus Sentinel data exposes a datum problem — why every site workflow needs an explicit CRS, epoch and projection before you measure.
23.4 Degrees and a Lumpy Geoid: the Physics Under Every Site Plan
Earth's 23.4° tilt, its lumpy geoid and your latitude decide every overhang and PV tilt. A four-line Python check for solstice sun altitude, Zurich-anchored.
PSI's 80°C Battery Trick: Solid-State Storage Learns to Last 1,500 Cycles
PSI's mild-sintering plus 65nm LiF coating keeps a lithium-metal solid-state cell at 75% after 1,500 cycles — and what it means for building-scale storage.
Switzerland's 30% solar cell — and the number that isn't on the roof yet
EPFL and CSEM certify 30.02% in a perovskite-silicon triple-junction solar cell — the physics behind the record and what it means for BIPV façade specs.
