Knotted proteins may not be as rare as they seem.
But the bill, which includes caps on carbon dioxide emissions, is still far from becoming law.
Another state forgoes a commonsense approach to reducing gas consumption.
Attach a couple of cobalt molecules to a ring of carbon and you have the dream memory material.
The best of the rest from the physics arXiv this week:
Will the cap-and-trade scheme work? Here's what the record in the EU shows.
The move is a potential boost for embryonic stem cell research.
A new map of the Milky Way galaxy proves that the sun's motion through the spiral arms could not have caused a well-known climate-change cycle.
Applicants can now receive status updates via the Web or e-mail, or with a text message.
Starspots big enough to change a star's brightness cause astronomers to rethink the exoplanet claim.