Home » 2013 » January

  • Bald-faced Hornet Worker Collecting Nest Material

    Bald-faced Hornet Worker Collecting Nest Material

    A female bald-faced hornet worker (Dolichovespula maculata) was stripping the surface of a wooden fence post to collect nest building material. While stripping with mandibles the cellulosic material gets rolled up under her thorax. She strips a piece as long as her body and then climbs up again to strip another. Two consequtive strips must have been the optimal load size to carry into the nest. Leaf-cutter ants of the neotropics also use their bodies as yard sticks. The motivation […]

    Continue reading »

  • Carolina Cranesbill (Geranium carolinianum) Flower Self-pollination

    Carolina Cranesbill (Geranium carolinianum) Flower Self-pollination

    Dr. Rebecca Shirk has studied genetic diversity and adaptation in native and invasive populations of Carolina cranesbill (Geranium carolinianum) during her PhD project in Department of Plant Biology at the University of Georgia in Athens. Flowers of this genus has a quite diverse pollination strategy. Flowers come in a staggering diversity of forms. There are huge flowers; tiny flowers; flowers that never open; flowers with patterns that can’t be seen by the human eye; and extremely specialized flowers that are […]

    Continue reading »

  • One Voice in the Cosmic Fugue – Carl Sagan (1980)

    One Voice in the Cosmic Fugue – Carl Sagan (1980)

    The Cosmos, is a thirteen part documentary produced written and presented by Carl Sagan aiming to expand public understanding of science. It is one of the most successful series and is perhaps the best one for telling the fascinating history of science reaching audiences in 60 countries since it has been aired. It inspired generations to become scientists from all over the world. It was written with such poetic vigor that in title of every episode there is an attractive […]

    Continue reading »

  • Kozmik Bestede Bir Nota – Carl Sagan (1980)

    Kozmik Bestede Bir Nota – Carl Sagan (1980)

    Carl Sagan 1980’li yıllarda televizyonu olan pek çok evin salonuna misafir olmuş Amerika’lı bir astronomdur. Onüç bölümden oluşan Kozmoz dizisi 6.3 milyon dolarlık bir bütçe ile hazırlanarak 60’dan fazla ülke televizyonunda yayınlandı. Gelmiş geçmiş en başarılı bilim belgeselinin tarzı öylesine şiirseldir ki, bölümlerin başlıkları bile işlenen konuyu kavramada yardımcı derin benzetmeler içeren özenle seçilmiş kelimelerden oluşur. Carl Sagan, “kişisel bir yolculuk” olarak nitelediği eserinde bizleri yolculuğuna yoldaş eder. Bilim tarihinde nefes kesici bir gezintiye çıkarız birlikte. Dizi içinde bir biyolog […]

    Continue reading »

shared on wplocker.com