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  • The Day The Mesozoic Died HHMI – Sean B. Carroll (2012)

    The Day The Mesozoic Died HHMI – Sean B. Carroll (2012)

    This is one of the four educational video series by Sean B. Carroll produced for communicating evolution to public with the support of HHMI. Today we know the cause of the disappearance of the dinosaurs at the end of the Cretaceous period. This knowledge was produced by the meticulous coordinated work of many scientists. The Day The Mesozoic Died focuses on how scientists do the detective work using the scientific method. The discovery that an asteroid struck the Earth 66 […]

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  • How Does the Purple Bacteria Photosynthesize? Beckman Institute-UIUC (2015)

    How Does the Purple Bacteria Photosynthesize? Beckman Institute-UIUC (2015)

    Imagine a time when our young Earth was spinning much faster and days were only 8 hours! Our sun was much cooler and less bright than today. There was no oxygen in the atmosphere. Those were the conditions when first photosynthetic organisms with purple pigments evolved in liquid environments. In this animation we see one such ancestral form of early anoxic photosynthesis taking place in the purple bacteria Rhodobacter sphaeroides in which oxygen is not produced. Life evolved into oxygen […]

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  • The Science of Camera Sensors – FimmakerIQ (2015)

    The Science of Camera Sensors – FimmakerIQ (2015)

    Camera technology has come a long way since the legendary Akeley gyroscope camera that made filming of truly historic documentary films such as Nanook of the North (1922) and Grass (1922). Now everything digital, an overview of the modern camera sensors is useful for naturalists. This lecture by FilmmakerIQ is a part of the Technical Notes series by Nature Documentaries aiming to compile useful technical, theoretical and practical knowledge for documentary filmmakers. The episode illustrates the electronic working principles of […]

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  • The History and Science of Lenses – FilmmakerIQ (2015)

    The History and Science of Lenses – FilmmakerIQ (2015)

    Glass has been a truly transformational material in Human history. Among many other remarkable things glass helped us understand and control properties of light. From photocopying machines to fiber optic cables glass revolutionized our lives. Gutenberg’s printing machine was a turning point with an unintended consequence. Printing created a huge demand for spectacles and glasswork craftsmanship in Europe literally exploded. Craftsmanship that built spectacles lead to building of more specialized optical instruments including microscopes, telescopes and eventually cameras. For all […]

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  • Depth of Field and Lens Equivalents – FilmmakerIQ (2016)

    Depth of Field and Lens Equivalents – FilmmakerIQ (2016)

    How does one achieve a sharp and clear image? What is depth of field? What is depth of focus? What affects their shallowness? This episode from FilmmakerIQ nicely explains the theory behind using the physics of light. Before starting the lecture you should have some basic understanding of the camera lenses such as the aperture. This is a part of the Technical Notes series of Nature Documentaries aiming to compile useful technical, theoretical and practical knowledge for documentary filmmakers. The […]

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  • The History of Frame Rate for Film – FilmmakerIQ (2015)

    The History of Frame Rate for Film – FilmmakerIQ (2015)

    This is a great breakdown of seemingly arbitrary and highly variable frame rates we experience today. Until the incorporation of sound which arrived as a superbly egalitarian/standardizing factor into the film, the frame rates were rather floppy. This lecture by FilmmakerIQ is a part of the Technical Notes series by Nature Documentaries aiming to compile useful technical, theoretical and practical knowledge for documentary filmmakers. The compact episode introduces the historical transitions from hand-cranked cinematographic cameras into television and later to […]

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  • The Properties of Camera Lenses – FilmmakerIQ (2015)

    The Properties of Camera Lenses – FilmmakerIQ (2015)

    The Technical Notes series of Nature Documentaries aims to compile useful technical, theoretical and practical knowledge for documentary filmmakers. In this lecture from the FilmmakerIQ you will be exposed to some basic properties of the camera lenses such as the focal length and the aperture. The episode is also a good segway into sensor technology which also gets covered in more detail in another episode. The episode gives a quick primer on focal length, field of view, diffraction theory and […]

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  • Bald Eagle Cam – Live from Minnesota – Breeding Season 2016

    Bald Eagle Cam – Live from Minnesota – Breeding Season 2016

    The 2016 breeding season for a pair of iconic Bald Eagles in Minnesota has started. After pair bonding and nest repair (nestoration) eagles started incubating eggs again in! A pair of iconic Bald Eagles have been raising their chicks in Central Minnesota on a nest constructed at 75 feet altitude on a cottonwood tree. You can learn more about this nest from the FAQs page of the website hosting this nestcam. Last year on March 9th Mom got into labor […]

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  • Visitors of Jerusalem Thorn (Paliurus spina-christi)

    Visitors of Jerusalem Thorn (Paliurus spina-christi)

    The Jerusalem Thorn (Paliurus spina-christi) is a native evergreen bush of the Mediterranean basin belonging to the Buckthorn family (Rhamnaceae). As you might have already guessed from its scientific name, this is the plant depicted as a torture device (the crown of thorns) on prophet Jesus Christ’s head. The genus Paliurus is quite recognizable by its orbicular-winged fruit. The fossil record for the genus is widespread in the Northern Hemisphere and goes back to the middle Eocene epoch (~34 million […]

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  • Perpetual Ocean from NASA

    Perpetual Ocean from NASA

    Understanding large-scale global climate and local weather patterns is important. Majority of our planet is covered by oceans therefore understanding ocean dynamics is key for making climatic forecasts. Here you can watch four interrelated animations produced by NASA’s Scientific Visualization Studio in a single video. All animations are based on simulations of high resolution satellite data on an impressively realistic General Circulation Model (GCMs) that NASA uses called ECCO2 (Estimating the Circulation and Climate of the Ocean Phase II). These […]

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  • Visitors of Starry Rosinweed – Silphium asteriscus (Asteraceae)

    Visitors of Starry Rosinweed – Silphium asteriscus (Asteraceae)

    A brief record of the insect visitors on a starry rosinweed in less than half hour period during August 14th 2010 at the State Botanical Garden in Athens, GA. Visitors/pollinators included long-horned bee (Melissodes bimaculata), Juvenal’s duskywing (Erynnis juvenalis), Carder bee (Anthidium illustre), Fiery skipper (Hylephila phyleus), Scoliid wasp (Scolia nobilitata), another long-horned bee belonging to genus Melissodes and Silvery Checkerspot (Chlosyne nycteis). In this short observation, the last visitor of the flower was a Silvery Checkerspot with rather beat […]

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  • Vertov’s “Man with a Movie Camera” (1929)

    Vertov’s “Man with a Movie Camera” (1929)

    Dziga Vertov’s “Man with a Movie Camera” has shown the world the capabilities of the cinematographic camera. The silent movie was advised to be accompanied with a fast-moving musical score. Since its release the film has been rendered with many soundtracks. Man with a Movie Camera took 4 years to film. It documents the daily life of modern Soviet city life, spanning four cities — Kharkiv, Kiev, Moscow and Odessa. The manifesto at the beginning of the film heralds the […]

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  • Six Ways to Prepare a Coelacanth – Shelf Life – AMNH (2015)

    Six Ways to Prepare a Coelacanth – Shelf Life – AMNH (2015)

    The Coelecanth was thought to be extinct. Its presence as a living species was discovered in 1938 by Marjorie Courtenay-Latimer. It is an immensely important species for evolutionary biology, especially in understanding tetrapod evolution. The story of the discovery of Coelecanth has been covered by many high profile magazines. Since its discovery from fossil remains the Coelecanth has been considered as the closest example for what could be as our last fish ancestor. This means that, it may have been […]

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