The stripes on zebras have been found to repel flies. But now researchers have found a black-and-white checkered pattern will, too — making them question the optical effect behind the phenomenon.

For the afternoon date watching Taylor Fritz face off against Jannik Sinner, Swift wore a red-and-white sundress by Reformation with a structured bodice and short skirt. Jamie Squire//Getty Images ...

She paired glossy black-and-white checkered floors and thick-striped wallpapers with furnishings ... which originally was made in a black-and-red checkered wool. “It’s familiar, and it has ...