Category: Science
-
PSLE Science Reality Lab Vol No.326 | “Biodegradation = 70% in 28 Days” — Did 70% of the Object Visibly Disappear Everywhere?
PSLE Science Reality Lab: learn why a biodegradation percentage belongs to a specific test endpoint and environment, and why 70% in 28 days does not automatically mean 70% of a product visibly disappeared everywhere.
-
PSLE Science Reality Lab Vol No.325 | “Control = 100%” — Does 150% Mean the Treatment Had 150 Units?
PSLE Science Reality Lab: learn how scientific graphs normalised to Control = 100% show relative values rather than absolute units, and how to recover the hidden reference before comparing treatments.
-
PSLE Science Reality Lab Vol No.324 | “DNA Barcode Match = 99%” — Does That Prove It Is Species A?
PSLE Science Reality Lab: learn why a 99% DNA-barcode match is sequence similarity rather than automatic 99% species certainty, and how match length, reference quality, close alternatives and specimen evidence change what the result can support.
-
PSLE Science Reality Lab Vol No.323 | “The Recorder Detected 500 Calls” — Were 500 Animals There?
PSLE Science Reality Lab: learn why hundreds of detected wildlife calls are not automatically hundreds of animals, and how recording effort, calling behaviour, detectability and classifier validation affect what passive-acoustic evidence can support.
-
PSLE Science Reality Lab Vol No.322 | “Kills 99.9% of Germs” — Does That Mean 99.9% of Every Germ Dies in Every Use?
PSLE Science Reality Lab: learn how to read a “kills 99.9%” antimicrobial claim by checking the tested organism, surface, method and contact time instead of turning one laboratory result into a universal guarantee.
-
PSLE Science Reality Lab Vol No.321 | “Plastic Code 1 in a Triangle” — Does That Guarantee It Can Be Recycled Here?
PSLE Science Reality Lab: learn why a plastic Resin Identification Code identifies resin type but does not guarantee that the item is recyclable or accepted by a local recycling system.
