When many Americans hear the words “cardiovascular emergency,” they think of a heart attack or stroke. Almost no one thinks of an aortic dissection, even though recognizing this condition quickly can ...

Over 120 years ago, Henry Ernest Dudeney posed the famous dissection problem of transforming a triangle into a square by cutting it into as few pieces as possible. In a new study, researchers have ...

A 74-year-old man presents to the emergency department with a 1-day history of severe chest and back pain. He has a history of hypertension and has run out of medication. He has no history of similar ...

Dudeney’s original solution for transforming an equilateral triangle into a perfect square through dissection involves only four pieces, a solution that has now been proved to be the optimal solution.