FEELING OFFBEAT Briefly disrupting a brain region involved in planning movement with a magnetic pulse hinders a person’s ability to follow a rhythmic beat. (The black square in this heat map indicates the site of highest pulse stimulation.)
Jessica Ross/UC Merced
Evidence hierarchies, one version shown, classify types of studies according to the strength of evidence they provide. But a recent paper challenges the assumptions behind these hierarchies.
MARINE MEDICINE A bryozoan called Bugula neritina, shown here, is a natural source of bryostatin 1, which has been studied as a potential drug for many years.