Broadcast[ edit ] The first series, of six episodes, aired from 16 October to 20 November on Mondays at 8. A Christmas special aired on 26 December at 9. The second series aired for fifteen episodes from 6 September to 13 December on Thursdays at 8. The fourth series, of thirteen episodes, aired from 6 September to 29 November on Sundays at 8. Series five for thirteen episodes on Sundays at 8. A Christmas Special followed on 24 December at 8.
Ten Reasons Evolution is Wrong
This American Life
Feather structure of a blue-and-yellow macaw Anterior region of a contour feather from a rock pigeon , visualized using scanning electron microscopy. Interlocking barbules are clearly seen in the middle image. Feathers are among the most complex integumentary appendages found in vertebrates and are formed in tiny follicles in the epidermis , or outer skin layer, that produce keratin proteins. Flight feather and Down feather There are two basic types of feather: The pennaceous feathers are vaned feathers. Also called contour feathers, pennaceous feathers arise from tracts and cover the entire body.
But Why Can’t I Wear a Hipster Headdress?
A lot of this will be review and is repeated elsewhere on the site, but I thought it was high time I pulled things together into a one-stop-anti-headdress shop. The many sources I drew from are included at the end of this post. Headdresses promote stereotyping of Native cultures. It also places Native people in the historic past, as something that cannot exist in modern society. Headdresses, feathers, and warbonnets have deep spiritual significance.
Were Darwin's Galapagos Finches Evolution? What does happen in a population as the genome reacts to the environment? Darwin looks at the finches on the Galapagos Islands and notices variations in beak size. He thought that the harder seed in the dry time was causing the beaks of the finches to grow stouter from the use of the part. But what was happening was that natural selection or a long term drought in the islands was causing the seed cases to harden.