A new subatomic weight scale can measure masses as tiny as one yoctogram. Less than the mass of a proton, a yoctogram is equivalent to a billionth of a billionth of a millionth of a gram. A yoctogram ...

WHEN IS A cup of flour not exactly a cup of flour? Almost always, as it turns out. Most home cooks in America routinely measure ingredients using cups and spoons. Most professional cooks rely on a ...