He zeroed in on Canadian human rights legislation that prohibits discrimination based on gender identity or expression.
He zeroed in on one well-documented rocket labeled "197" that he knew, from a Twitter follower's tip, had fallen somewhere approximately between the towns of Zamalka and Ein Tarma.
He zeroed in on the bladder's basement layer of cells, just as one of biology's foremost cultivators of cells, Dr. Howard Green, had done in the 1970's with skin.
Joining with Dr. Mark McClellan, another economist, he zeroed in on heart disease.
He zeroed in on a key and largely overlooked aspect of her medical history.
After completing a post-doc and research assistant professorship at the University of North Carolina at Chapel Hill, he joined the faculty at Johns Hopkins where he zeroed in on a ubiquitous pollution source: gas stations.
He zeroed in on this isolated archipelago of Jesuit missions because they were free of complications that would make it impossible to tease out the effect of missions founded in, say, the megalopolis of Sao Paulo.
Andy Murray's near-photographic memory swept through his personal archive and he zeroed in on Andrey Golubev, recalling that his opponent in the first round of the French Open was a murderous if scattergun hitter of a tennis ball.
When he took a sabbatical from Stanford six years ago and pondered what big problem he could help solve, he zeroed in on the idea of reducing the consumption of meat.
In his letter, Mr. Schwarz did not question the integrity of the commission's members, but contended that they did not represent "the varied viewpoints in our city". And he zeroed in on the events leading up to the panel's creation.
He zeroed in on housing while working at the Legal Assistance Foundation of Metropolitan Chicago.
