In his classic book The Dragons of Eden, astronomer Carl Sagan tidily summarized the central challenge scientists face when they try to formulate grand new theories: “Remarkable claims require ...

A string test, also called an “entero-test,” is one type of test used to detect the presence of parasites in the upper part of the small intestine. Once established, these parasites can grow and ...

For decades, many scientists have criticized string theory, pointing out that it does not make predictions by which it can be tested. Now, researchers at Carnegie Mellon University; the University of ...

There is no getting away from it: string theory is an incredibly vast and challenging subject. With its talk of D-branes, 10- or 11-dimensional universes and a myriad of possible solutions – 10 500 at ...