Isotopes of neon from the solar wind fractionate with depth in detectors on the Genesis spacecraft; a similar process may explain enigmatic neon isotopes in lunar soils.

RNA polymerase bound to DNA begins transcription by pulling downstream DNA into itself to form a scrunched intermediate that provides the force for subsequent steps.

Bacteria can add sugars to proteins after the latter have folded, whereas eukaryotic cells do so during the protein folding process.