Natural selection may be making society more unequal

Contemporary humans are still evolving, but natural selection favors those with lower earnings and poorer education—according to research from the University of East Anglia.

A new mathematical model of cellular movement

A mathematical model that describes how cells change their shape during movement suggests that the movement is mainly driven by the contraction of the skeletal proteins, called "myosin." The new model developed at Penn State ...

States to sign voluntary cutbacks of Colorado River water

To help stave off another round of mandatory cutbacks, water leaders for Arizona, Nevada and California are preparing to sign an agreement that would voluntarily reduce Colorado River water to the lower basin states by 500,000 ...

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