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
What the Health funded via an Indiegogo campaign in March 2016, raising more than $235,000. The film was released globally on Vimeo on March 16, 2017, and screenings licensed through Tugg Inc. The following doctors were featured in the film: A number of non-physicians were also interviewed: The documentary has drawn criticism from many, including scientific skeptics, who contend that it misrepresents facts: A companion book of the same name was released February 2017. It was authored by Eunice Wong, who is married to journalist Chris Hedges. What the Health What the Health is a 2017 documentary film which critiques the health impact