Working amplified in a small room for about 15 tables of listeners digesting their dinners, Ms. Racette made sounds that were strikingly darker: sometimes in a contraltolike belt, alternating between various purrs and growls, and at selected moments opening up fully in operalike climaxes.

Quinmerac is primarily used for the post-emergence control of cleavers, speedwells and other broad-leaved weeds in cereals, oilseed rape and sugar beet.

Working under the obvious influence of Errol Morris — notable in their attention to beauty, interview style and even pacing — they shift seamlessly from macroimages of the swarming bees to close-ups of their fretting keepers who are struggling with the devastation, including one large California family that is unwisely compared to a hive.

I was up for a cup of coffee once; those were the best six days of my career.