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A new study has found that giraffes are capable of statistical reasoning, challenging the idea that only animals with large brains relative to body size possess this ability.
Grain refinement occurs during manufacturing process, and grain size has a significant impact on mechanical properties. It is essential to establish the relationship between grain evolution and plastic behavior. The quasi-static and dynamic compression experiments for three kinds of oxygen-free high-conductivity (OFHC) copper with different grain sizes have been carried out. The true stress-strain curves were corrected to the isothermal curves, in which the temperature dependence of the specific heat capacity was used. It was found that the grain size has a significant influence on the yield s...
Using a new equation based on today’s primates, scientists can take a few molar teeth from an extinct fossil species and reconstruct exactly how fast their offspring grew during gestation.
If a Neanderthal walked down the street, appropriately dressed, you probably wouldn’t notice.
This unbridged gap between the ape-like australopithecines and the abruptly appearing human-like members of our genus challenges evolutionary accounts.