Keel (bird anatomy) Keel (bird anatomy) A keel or carina (plural carinae) in bird anatomy is an extension of the sternum (breastbone) which runs axially along the midline of the sternum and extends outward, perpendicular to the plane of the ribs. The keel provides an anchor to which a bird's wing muscles attach, thereby providing adequate leverage for flight. Keels do not exist on all birds; in particular, some flightless birds lack a keel structure. Historically, the presence or absence of a pronounced keel structure was used as a broad classification of birds into two orders: Carinatae (from "carina", "keel"), having a pronounced
Anatomy of a Disaster Anatomy of a Disaster Anatomy of a Disaster is a Philippine television documentary show broadcast by GMA Network. Hosted by Richard Gutierrez, it premiered on August 22, 2010. The show concluded on November 6, 2011. Considered to be a more comprehensive version of Richard’s former infotainment show Full Force Nature, Anatomy of a Disaster features different stories of tragedy, survival, and heroism adapted from the international AOD series of the same title. Each of the 13 episodes provides a scientific and detailed account of various natural disasters such as volcanic eruption, flood, hurricane, earthquake, and climate change, among others, in