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AnthropologyChimps indifferent to others’ welfare
New laboratory experiments suggest that chimpanzees, unlike people, don't care about the welfare of unrelated members of their social groups.
By Bruce Bower -
PhysicsA matter of gravity
Gravity Probe B has finished its test of general relativity but results of the study won't be known for another year.
By Ron Cowen -
Questions on the Couch
A new policy statement on evidence-based practice from the American Psychological Association illustrates the intense struggle among researchers and clinicians over how best to study the effectiveness of psychotherapy in its many forms.
By Bruce Bower -
MathPushing the Limit
Scientists are moving closer to constructing superefficient, noisefree data-transmission codes.