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New Atomic Weights for 19 Elements
October 31, 2013 | USGS

The standard atomic weights of nineteen elements have been changed as the result of cooperative research supported by the U.S. Geological Survey and the International Union of Pure and Applied Chemistry.

The standard atomic weights of molybdenum, cadmium, selenium, and thorium have been changed based on recent determinations of terrestrial isotopic abundances. In addition, the standard atomic weights of 15 elements have been revised based on a new assessment of their atomic masses by the International Union of Pure and Applied Physics.


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Variable Atomic Weights?
June 18, 2013 | USGS
"Standard atomic weights for chemical elements have commonly been considered as constants of nature, along with the speed of light and the attraction of gravity. Hold on to your Newtonian hat and prepare for the possibility of elementary nuances." Quoted from the USGS press release.

Recovering Rare Earth Elements from Mine Tailings?
September 6, 2013 | USGS
"USGS scientists are reanalyzing rocks, minerals and associated mine tailing samples – some collected 120 years ago – to assess their rare and critical elements, which could become potential for economic development." Quoted from the USGS press release. Related: What are rare earth elements?

Snow-Covered Trees?
January 30, 2014 | Weather Channel
The Weather Channel has some interesting photos of some snow covered trees from in northern Finland, near the Arctic Circle. If you didn't know the scale you might think that they are clouds from an atomic or volcanic blast.


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