According to some experts, 720p displays typically pick up just one 540-line field from each two-field 1080i frame, discarding the rest of the data, rather than sampling it.

ENGADGET: To 720p or not 720p? HDBlog raises the question.

But Scott Zeger, the head of the department of biostatistics at Johns Hopkins, who performed the statistical analysis in the study, points out that clustered sampling is the rule rather than the exception in public-health studies, and that the patterns of deaths caused by epidemics are also very variable by location.

ECONOMIST: The Iraqi war