What does quark-gluon plasma—the hot soup of elementary particles formed a few microseconds after the Big Bang—have in common with tap water? Scientists say it's the way it flows. A new study, ...

If the word "quark" sparks memories of physics class, rest easy: a) I'm not qualified to write about physics; and b) that's not the kind of quark we're talking about. This quark is a cheesy, yogurt-y ...

Matter is built around quarks, forming the nuclei of the atoms and molecules. While there are six types of quarks, regular matter contains only two: up quarks and down quarks. Protons contain two ups ...