title: Living in a physical world XII. Keeping up upward and down downward.
authors.affiliation: Department of Biology, Duke University, Durham, NC 27708-0338, USA. svogel@duke.edu
authors.forename: Steven
authors.initials: S
authors.lastname: Vogel
mesh_terms: D000818:Animals; D001696:Biomechanical Phenomena / Q000639:trends; D005426:Flight, Animal / Q000502:physiology*; D006801:Humans; D008124:Locomotion / Q000502:physiology*; D009949:Orientation / Q000502:physiology*; D018521:Plant Physiological Phenomena