Fresh Air with Terry Gross. From WHYY. Peabody Award-winning weekday magazine of contemporary arts and issues. Tumblr curated by associate producer, Heidi Saman, and assistant producer for online media, Molly Seavy-Nesper.
Posted on 16 December, 2010
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In a list that only singer-comedian Tom Lehrer could love, hydrogen, lithium, boron, carbon, nitrogen, oxygen, silicon, sulfur, chlorine and thallium now all have new mass definitions.
atomic mass number