At first glance, beach sand seems simple—just tiny grains beneath your feet. But under a microscope, those grains reveal a hidden world of colorful shells, coral fragments, crystals, and tiny marine ...

After building a microscope from scratch, he tested pond water, his own blood, eggshells, sand, glass, wool, and more. Some ...

The SandAI neural network was trained using modern quartz sand and can help unravel the histories encoded in ancient rocks. Shown here are ancient ripples formed by water currents being reworked by ...