Cardinals: why they’re red and their ability to act as PFAS sensors

Birds are enviable. Although they can't integrate the Lambert function, they're far more musical than rappers and far more in tune than most of us. They build nests without mortgages and fly despite COVID. In fact they will always fly without having to sit, without hoping for a window seat. We can only dream of... Continue Reading →

From a Math Puzzle to an Odd Moon

Asked for an odd moon, my friend Bob thought of Keith Moon, a witty but incorrect answer. If you hated age-problems in high school algebra, you have plenty of company. I've even heard teachers complain that they are contrived instruments of torture. (I think they are merely tired of teaching a curriculum over which they... Continue Reading →

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