[P4 Science and up: Magnetism] It frankly never occurred to me, and like many other people, that this was a thing. The case is not isolated, of course - Many of the animals in the wild cannot differentiate food from garbage. You see a lot of seagulls piling up bottlecaps and plastics in their bodies, being weighed down by the foods they cannot digest and eventually dying off. We must never forget that we are not the only inhabitants on this planet, and that our garbage, bypro

[S1 Science & Maths: Reflection (and property of ellipses)] You may have found a puzzle like this while digging around older newspaper articles on mathematics. If not, well, here's the rundown: The focal points of the ellipse is the primary reason why Roger Penrose's room works as prescribed. Think of this as a challenge, for those who are mathematically inclined: How would you find and locate the focal point of an ellipse?