Recent Videos

• 

  A Mating Aggregation of Bearded Fireworms – Lütfü Tanrıöver (2010)

  August 7, 2016 at 12:12 pm / Evolution, Natural history, Short Observations

  A mating aggregation of a Mediterranean polychete worm (Hermodice carunculata). External fertilization is one of the early ancestral ways to produce offspring. Here an underwater explorer based in Fethiye has recorded a spawning aggregation of the Mediterranean polychete worm (Hermodice carunculata). External fertilization is rather costly. Internal fertilization has evolved numerous times as a result of this. One of the most striking example is the Coelecanth with many specimen containing embryos. Egg production requires more resources compared to sperm. Females […]

  Continue reading »

• 

  The Life Cycle of a Mosquito – Prelinger Archives (1947)

  August 6, 2016 at 4:37 pm / Natural history, Video, Wildlife Documentaries

  The mosquito-transmitted disease malaria is killing around 600.000 people every year world wide alone. The year 2010 was a record peak with 1.2 million deaths. Mosquitos transmit so many diseases that they are arguably the most dangerous animals on Earth. They even act as vectors in transmitting parasites including the Human bot fly. Mosquitoes are a family of small, midge-like flies: the Culicidae. Although a few species are harmless or even useful to humanity, most are a nuisance because they […]

  Continue reading »

• 

  Preserving Lonesome George – AMNH (2015)

  August 2, 2016 at 11:00 pm / Evolution, Natural history, Video

  Lonesome George was the last male individual of the Pinta Island tortoise. He sadly passed away in his corral at the Charles Darwin Research Station in Galápagos Islands on the morning of June 24 2012. He died from natural causes. Lonesome George became a worldwide icon of conservation. Efforts to breed him at the Galápagos National Park and Charles Darwin Research Station concluded with no success. Thus he became “a living dead” member of his species doomed for extinction. Lonesome […]

  Continue reading »

•  
• 

  PETM – Unearthing Ancient Climate Change – Science Bulletins – AMNH

  July 31, 2016 at 9:05 pm / Evolution, Global Patterns, Video

  Scientists have a few hypotheses but no theory has yet emerged about a significant bio-geological event that happened fifty-five million years ago. What we know for sure was that there was a sudden, enormous influx of carbon that has dissolved in the ocean and atmosphere. As atmospheric CO2 content increased, the average global surface temperature rose 5°C to 9°C (9°F to 16°F). This global warming event is called the Paleocene-Eocene Thermal Maximum (PETM) and lasted for 170,000 years. Events triggered […]

  Continue reading »

• 

  Archerfish Hunting Using Water Jet – Black Lagoon – Smithsonian Institution (2015)

  July 27, 2016 at 6:57 pm / Natural history, Video, Wildlife Documentaries

  The Archerfish posseses one of the most complex feeding behavior among fishes. Complex feeding behaviors involving proto-tool use are common among marine fishes. Scientists have noticed such behavior in many wrasses, in black spotted tuskfish, (Choerodon schoenleinii) from the Great Barrier Reef; in yellowhead wrasses (Halichoeres garnoti) off the coast of Florida; and in a sixbar wrasse (Thalassoma hardwicke) in an aquarium setting. For instance, wrasses crunch sea urchins against corals and use anvils to smash food into more gulpable […]

  Continue reading »

• 

  Fish Tool Use Documented in the Wild – (2016)

  July 27, 2016 at 6:51 pm / Ecological Documentaries, Natural history, Short Observations, Video

  The news that a black spotted tuskfish, Choerodon schoenleinii, (Valenciennes, 1839) was observed using a tool made the hearts of ethologists race. Here you can see a few recorded examples of the behavior from different locations and species belonging to the same genus within the wrasse family. As the story goes the behavior was first observed by Scott Gardner in Australia. On November 12th 2006, Mr. Gardner did an 18-m dive in the Keppel region of the southern Great Barrier […]

  Continue reading »

•  
• 

  X Inactivation and Epigenetics – Etsuko Uno & Drew Berry / WEHI (2012)

  June 26, 2016 at 7:42 pm / Video

  Why all calico cats are female? In all mammals sex is genetically determined by X and Y chromosomes. In Humans females carry two X chromosomes (XX). Males carry both X and Y chromosomes (XY). The mammalian Y chromosome has began to evolve from the X chromosome at about 170 million years ago. For some strange genetic recombinational quirk that happened in the ancestor of all mammals Y chromosomes lost their ability to exchange information with X. Currently, more than 95% […]

  Continue reading »

• 

  Kon-Tiki Expedition – A Test of a Hypothesis for Human Gene Flow (1950)

  June 22, 2016 at 2:46 pm / Evolution, Human Nature, Video

  Kon-Tiki was a legendary expedition that was carried out in 1947 by Norvegian anthropologist Thor Heyerdahl. The expedition tested a hypothesis whether Pacific Islands could have been colonized from Americas and thus wanted to demonstrate that waterways were not barriers but means of transportation and gene flow for human populations. Peopling of the Pacific is a fascinating story. The Polynesians were without question the greatest open ocean voyagers in the human history. They built double-hulled canoes and traveled over the […]

  Continue reading »

• 

  Animations of Unseeable Biology – Drew Berry – TED Talk (2011)

  June 3, 2016 at 7:00 am / Evolution, Molecular Nature, Video

  Drew Berry introduces us to the fascinating world of molecules. Since the invention of X-ray crystallography our depth of understanding the molecular nature of things have skyrocketed. Year 2012 marked the centennial of the discovery of X-ray chrystallography by the Australian physicist William Lawrence Bragg who shared the Nobel Prize with his father in 1915. The technique was so powerful that since its discovery, it generated 28 Nobel Prizes including the discovery of DNA. the famous X-ray chrystallographical image #51 […]

  Continue reading »

•  
• 

  Anole Lizard Aggression – Neil Losin (2011)

  May 31, 2016 at 11:34 am / Ecological Documentaries, Evolution, Natural history, Video, Wildlife Documentaries

  We humans rarely have punch ups with each other to decide who will mate. However, an anole lizards life is frequently interrupted by brawls. Neil Losin is an evolutionary biologist from UCLA who studies aggressive behavior among anole lizards. Anole lizards not only have punch ups among each other (intraspecific aggression) but they also have such interactions with other species (interspecific aggression). This is when things get even more interesting. In less than 10 minutes this documentary outlines the research […]

  Continue reading »

• 

  Bowerbird’s Grand Performance – Life Story – BBC

  May 22, 2016 at 9:20 pm / BBC documentaries, Ecological Documentaries, Evolution, Natural history, Wildlife Documentaries

  With its retina punishing feather colors this is a spectacular solo mating dance performed by a male bowerbird advertising his male qualities. The independent dilation and contraction of the pupils is a striking part of the choreography at the beginning of the performance. In Humans male brains perceive dilated eyes as a signal for sexual readiness of females. Seeing the exaggerated form here should make us curious about our “inner reptile” since birds and mammals have evolved from independent reptilian […]

  Continue reading »

• 

  Learning to Live on the Moon – PBS

  May 17, 2016 at 2:04 pm / Ecological Documentaries, Human Nature, Nova Documentaries, PBS Nature, Video

  Energy flows, nutrients cycle. This is how we can define working principles of an ecosystem in a nutshell. Our planet has a very complex land-air-water interaction and we are only beginning to understand the behavior of these systems by simplifying them in enclosed systems such as Landscape Evolution Laboratory (LEO). Due to its proximity, the Moon appears to be the most convenient celestial body to colonize. The Moon is so close that it can even occasionally get shielded by the […]

  Continue reading »

•  
• 

  Understanding Our Moon – NASA/SVS

  May 17, 2016 at 2:02 pm / Video

  The Moon has been a very influential body on life on Earth. Some argue that having a satellite like the Moon is a prerequisite for life in other planets. The Moon has a stabilizing effect on rotation axis of our planet. Without it, the axis would wobble more erratically making ice ages and inter-glacial warming periods more extreme and sudden. Understanding our Moon will help understand evolutionary history of our planet. After all, both bodies have started forming from the […]

  Continue reading »

• 

  City Farms – KQED/QUEST (2013)

  May 16, 2016 at 11:42 am / Human Nature, Video

  On the forefront of Good Food Revolution Will Allen of Milwaukee demonstrates a working Urban Farm. He defines his effort as establishing oasis in a “food desert”. The program prepared by QUEST gives a brief biographical sketch and highlights from the project. Following a significant career in basketball, Allen decided to go back to farming. In 2008 he was granted a prestigious MacArthur Foundation “genius” grant for his influential contributions to the urban agricultural practices. “The Great Migration transformed the […]

  Continue reading »

• 

  Decoding the Chemical Language of Nature – Jing-Ke Weng | TEDxBeaconStreet (2015)

  May 6, 2016 at 9:17 pm / Evolution, Molecular Nature, Natural history

  Chemical diversity in nature is bewildering. Repertoire of chemicals in plants is especially rich. A great majority (almost all) of the single-compound drugs have been discovered in plants: salicylic acid (Aspirin), artemisinin (anti-malarial), thebaine (analgesic derived from opium) are just a quick few to spell out. All these chemicals are products of specialized secondary metabolic pathways in plants. Chemical compounds forming specialized metabolites protect plants against various abiotic stresses and mediate an array of interspecies interactions, ranging from seduction of […]

  Continue reading »

•