Some bacterial membrane transporters work almost like freight elevators to transport substances through the cell membrane into the interior of the cell. The transporter itself spans the bacterial ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. (NEXSTAR) – Perhaps no button on Earth is ...

DEAR MISS MANNERS: I know this may sound like a silly question, but what exactly is the proper etiquette for getting on and off an elevator? Is there even a proper way? Related Articles Miss Manners: ...

(NEXSTAR) – Perhaps no button on Earth is mashed as furiously as the “door close” button in an elevator. The button, usually denoted by a set of arrows pointing inward, is a favorite of impatient ...