A mixture of two types of pigment-producing cells undergoes diffusiophoretic transport to self-assemble into a hexagonal pattern. Credit: Siamak Mirfendereski and Ankur Gupta/CU Boulder A zebra’s ...

"How Flowers Made Our World: The Story of Nature's Revolutionaries" By David George Haskell (Viking, 352 pages, $32) David George Haskell will speak in Convocation Hall at Sewanee: The University of ...