[UPDATED 4/28: with information from FDA. Altered sentences in italics.] A radioactive isotope of strontium has been detected in American milk for the first time since Japan's nuclear disaster—in a ...

Just how dangerous to the human race is the radioactive fallout from nuclear-weapons tests? The subject is enormously complex, and to understand all aspects of it requires expert knowledge of many ...

Strontium takes its name from the Scottish village of Strontian (Sròn an t-Sìthein), making it the only element named after a place in the United Kingdom. Adair Crawford in 1790 recognized that the ...

Your support goes further this holiday season. When you buy an annual membership or give a one-time contribution, we’ll give a membership to someone who can’t afford access. It’s a simple way for you ...

Probing strontium: seeing the first evidence of "spin symmetry" A new measurement, made by an international team of researchers using the world’s most precise clock, shows that the quantum spins of ...

Strontium is a soft, silvery metal with a number of uses: It blocks X-rays emitted by TV picture tubes; it causes paint to glow in the dark; and it is responsible for the brilliant reds in fireworks.

A little-known element is shedding light on the transatlantic slave trade. Researchers have assembled a map of strontium, a naturally occurring element, across sub-Saharan Africa. These data can be ...

Optical lattice clocks are emerging timekeeping devices based on tens of thousands of ultracold atoms trapped in an optical lattice (i.e., a grid of laser light). By oscillating between two distinct ...

Researchers at the Ye Lab at JILA (the National Institute of Standards and Technology and the University of Colorado Boulder) and University of Delaware recently created a highly precise optical ...