One sky, three verdicts: why Singapore says unhealthy and Malaysia says moderate
The same 70 micrograms of fine particulate reads 116 on Singapore's PSI, 96 on Malaysia's API and 161 on the US AQI. Alm...
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Your CO2 monitor's red line is a 19th-century number, and it is drifting
The 1000 ppm line is Pettenkofer's, proposed in the 19th century as a proxy for whether a room smelled stuffy. ASHRAE re...
Leap seconds end on 20 May 2027, and the Earth has already turned around
The committee that has inserted 27 leap seconds since 1972 is proposing to stop, and to let clock time drift up to an ho...
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Mitochondrial DNA does not use the genetic code you were taught
Four codons differ between the standard genetic code and the one your mitochondria use, and two of them are stop signals...
Why your DNA ancestry estimate is vaguer if you are Asian
A result full of "Broadly" labels is telling you something real, but not about your ancestry. One company's own document...
When a DNA match could be your grandparent or your half-sibling
A match sharing around 1,700 centimorgans could be a grandparent, an aunt or uncle, or a half-sibling. The averages for...
Why a 1,000-Qubit Computer Has Zero Usable Qubits
Physical qubits and logical qubits are different currencies. At current error rates one logical qubit costs about 1,681...
How Much Faster Is Quantum Search, Actually?
We ran Grover's algorithm and counted the oracle calls. Over 4,096 items it looked 50 times against a classical average...
What Is a Qubit, Really?
A qubit is not a bit that is both values at once. We built a simulator and measured what actually separates one from a c...
What Actually Decides When Caffeine Wears Off
Coffee at four, still awake at midnight? The usual answer is that a substance is gone after ten half-lives — a tidy numb...
Why Isn't the Periodic Table Sorted by Weight?
The periodic table is not ordered by weight. Walk our own 118-element data from hydrogen to oganesson and the weight fal...
Why the Voltage-Drop Limit Is Really an Efficiency Limit
The voltage-drop limit in every wiring code reads as a performance rule. The current cancels, so the share of power burn...
Significant Figures: The Digits Your Calculator Invents
We audited our own science calculators against the precision their inputs actually justify. Across 768 multiplications a...
What a Punnett Square Cannot Tell You
The square says three-to-one, and the lesson usually adds that in a family of four, three children will show the trait a...
How to Size a Cable: the Six Checks, and the Three People Skip
Picking a cable looks like one lookup — find the current, read the size off a table. That answer is right in a cool plan...
Dilute It Tenfold. The pH Moves One Unit, or None at All.
C1V1 = C2V2 looks like arithmetic but is a physical claim with four assumptions inside it. Dilute a strong acid tenfold...
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