The principle of superposition states that... Within a sequence of undisturbed sedimentary or volcanic rocks, the layers get younger going from bottom to top. It can be used for relative age dating ...

Are you a local? Maybe in human terms. But not in geologic terms. We are not even babies yet. A lot of us take mud season to escape to the desert. Dry out our bones amid the sandstone down among ...

Quantum test of the equivalence principle for atoms in coherent superposition of internal energy states. Nat. Commun. 8, 15529 doi: 10.1038/ncomms15529 (2017).