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19872

The research described in this article draws sound conclusions. However, the context suggests the tests were done at constant speeds. I submit there is yet another cause. It has been my observation that washboarding occurs initially and primarily at areas where there is acceleration, such as coming out of curves and starting up inclines. Don […]

Depression Defense: Sick elderly get mood aid from home treatment

Instructional therapy to promote coping strategies helps elderly people with incipient blindness ward off depression—at least in the short run.

Protein Lineages: Randomness was crucial to ancient genetic changes

Reconstruction of an ancient protein shows how seemingly unimportant mutations paved the way for its evolution into a molecule with an essential modern role.