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Latest Radiogenic Stories

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2011-07-18 05:45:00

The radioactive decay of uranium, thorium, and potassium contained in the Earth's crust provides nearly half of the planet's internal heat, claim the authors of a new study that has been published in Nature Geoscience and currently available at the journal's website. "The Earth has cooled since its formation, yet the decay of radiogenic isotopes...in the planet's interior provides a continuing heat source," the international team of American, Japanese, and Dutch researchers behind the project...


Word of the Day
humgruffin
  • A terrible or repulsive person.
Regarding the etymology of 'humgruffin,' the OED says (rather unhelpfully) that it's a 'made-up word.' We might guess that 'hum' comes from 'humbug' or possibly 'hum' meaning 'a disagreeable smell,' while 'gruffin' could be a combination of 'gruff' and 'griffin.'