Differential equations are fundamental tools in physics: they are used to describe phenomena ranging from fluid dynamics to general relativity. But when these equations become stiff (i.e. they involve ...

Since the early 20th century, scientists have gathered compelling evidence that the universe is expanding at an accelerating rate. This acceleration is attributed to what is known as dark energy—a ...

While he was gathering his belongings at Lexington’s Blue Grass Airport across from Keeneland, trainer Mark Casse watched on electronic devices as his horses won consecutive races at Aqueduct, capped ...