Keel (bird anatomy) keel; and ratites (from "ratis", "raft" — referring to the flatness of the sternum), having a subtle keel structure or lacking one entirely. However, this classification has fallen into disuse as evolutionary studies have shown that many flightless birds have evolved from flighted birds. The current definition of Carinatae now includes all extant birds. 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
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