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JIT compiler stack up against PyPy? We ran side-by-side benchmarks to find out, and the answers may surprise you.

UCSF scientists discover that the spindle, the structure that divides chromosomes equally during mitosis, actually gets stronger when it is stretched.

THURSDAY UPDATE: The girl, identified as Zaria Rosa Miller, died Thursday morning, family members said in a Facebook post. The post stated: "We would like to express our indescribable gratitude to the ...