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MathPrime proof zeros in on crucial numbers
A new theorem may lead to a proof of Catalan's conjecture, a venerable problem in number theory concerning consecutive powers of whole numbers.
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AnimalsFirst mammal joins the eusocial club
Because naked mole rats exhibit permanent physical traits that distinguish certain castes of a colony, they belong to the same grouping as so-called eusocial insects such as bees, ants, wasps, and termites.
By Laura Sivitz -
EarthLife Landed 2.6 Billion Years Ago
Unusually carbon-rich rocks found in eastern South Africa may push back the evidence of life on land to 2.6 billion years ago, more than twice the current age of indisputably terrestrial organisms.