Scientists have traced Earth’s path through the galaxy via tiny crystals found in its crust

Credit: Triff/Shutterstock “To see a world in a grain of sand,” the opening sentence of the poem by William Blake, is an oft-used phrase that also captures some of what geologists do. We observe the composition of mineral grains, smaller than the width of a human hair. Then, we extrapolate the chemical processes they suggest …

Scientists have traced Earth’s path through the galaxy via tiny crystals found in its crust Read More »