Why are human faces so variable compared to other animals'? Two UC Berkeley biologists, Michael Nachman and postdoc Michael Sheehan, analyzed human faces and genes and found a variability that could only be explained by natural selection for highly variable faces, probably because social interactions and being recognizable are so important to human relationships.
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As 30 white doves circled overhead and a lone bagpiper played "Amazing Grace," the UC Berkeley campus took a moment on Monday to remember more than 90 members of the campus community - faculty, emeriti, staff and students - who died over the last year.
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The human brain is capable of a neural workaround that compensates for the buildup of beta-amyloid, a destructive protein associated with Alzheimer's disease. The findings could help explain how some older adults with beta-amyloid deposits in their brain retain normal cognitive function while others develop dementia.
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