A new statewide campaign is putting a spotlight on early reading, and one Yuma elementary school is showing what’s possible when literacy is made a top priority. Read On Arizona’s “Literacy is the Key ...

A more precise definition of the second is crucial to all sorts of physical measurements – but to get there, scientists have to pack up their extraordinarily fragile optical clocks and take them on to ...

Atomic clocks are the basis upon which a second is defined. But there is a new kid on the block, the optical clock, which ...

Shopping for the avid bookworm in your family? These gadgets will enhance the experience of dedicated readers, and most won't ...