<div><a href="https://phys.org/news/2019-04-microscopic-swimmers-visual-perception-group.html">https://phys.org/news/2019-04-microscopic-swimmers-visual-perception-group.html</a></div><div dir="auto"><br></div><div dir="auto">Really paring down the classical flocking rules...</div><div dir="auto"><br></div><div dir="auto">C</div><div dir="auto"><br></div>