The English poet William Blake famously implored readers to “see the world in a grain of sand.” In the journal Physics of Fluids, scientists from the University of Campinas, in Brazil, and the University of California, Los Angeles, have been doing just thatâstudying the “granular” dynamics of how crescent-shaped sand dunes are formed.
Click here for original story, Tiny underwater sand dunes may shed light on larger terrestrial and Martian formations
Source: Phys.org