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We Don't Know: Magnetoreception
 
03:36
This episode explores animals' ability to perceive magnetism or “magnetoreception." We know from behavioral evidence that many organisms, from bacteria, to lobsters, to pigeons sense and respond to magnetic fields but we are just starting to learn how this works. Learn more about magnetoreception: http://scim.ag/2gMOFS3
Views: 24356 Science Magazine
Joseph Takahashi (UT Southwestern/HHMI) Part 1A: Circadian Clocks: Clock Genes, Cells and Circuits
 
33:18
https://www.ibiology.org/genetics-and-gene-regulation/circadian-clocks/ Lecture Overview: Circadian rhythms are an adaptation to the 24 hr day that we experience. Takahashi begins his talk with an historic overview of how the genes controlling circadian clocks were first identified in Drosophila and the cloning tour de force that was required to identify clock genes in mice. He also describes the experiments that resulted in the realization that all cells in the body have a circadian clock, not just cells in the brain. In part 1B, Takahashi explains that the suprachiasmatic nucleus (SCN) in the brain generates a circadian rhythm of fluctuating body temperature that, in turn, signals to peripheral tissues. Heat shock factor 1 is one of the signaling molecules responsible for communicating the temperature information and resetting peripheral clocks. In Part 2, Takahashi describes how crossing many mice of different genetic backgrounds allowed his lab to identify several genes that impact the output of the clock gene system through different mechanisms. Takahashi begins the last part of his presentation with the crystal structures of BMAL and Clock, the two central activators of clock gene transcription. He goes on to describe how his lab showed that BMAL/Clock controls the DNA binding activity of transcriptional regulators of not only cycling genes, but also of basic cell functions such as RNA polymerase 2 occupancy and histone modification. Speaker Bio: Joseph Takahashi received his BA in biology from Swarthmore College, his PhD in neuroscience from the University of Oregon, and he was a post-doctoral fellow with Martin Zatz at the National Institutes of Mental Health. He then spent 26 years at Northwestern University where he was a faculty member in the Department of Neurobiology and Physiology and in 1997 he became an Investigator of the Howard Hughes Medical Institute. In 2008, Takahashi joined the University of Texas, Southwestern Medical Center as the Loyd B. Sands Distinguished Chair in Neuroscience. Using forward genetic screens in mice, Takahashi identified the first mammalian circadian gene "Clock" in 1997. Since then, his lab has gone on to identify and clone numerous circadian genes in both the brain and tissues throughout the body. Takahashi has received numerous awards and honors for his ground-breaking research including election to the National Academy of Sciences.
Views: 15967 iBiology
Quantum Biology: The Hidden Nature of Nature
 
01:35:37
Can the spooky world of quantum physics explain bird navigation, photosynthesis and even our delicate sense of smell? Clues are mounting that the rules governing the subatomic realm may play an unexpectedly pivotal role in the visible world. Join leading thinkers in the emerging field of quantum biology as they explore the hidden hand of quantum physics in everyday life and discuss how these insights may one day revolutionize thinking on everything from the energy crisis to quantum computers. The World Science Festival gathers great minds in science and the arts to produce live and digital content that allows a broad general audience to engage with scientific discoveries. Our mission is to cultivate a general public informed by science, inspired by its wonder, convinced of its value, and prepared to engage with its implications for the future. Subscribe to our YouTube Channel for all the latest from WSF. Visit our Website: http://www.worldsciencefestival.com/ Like us on Facebook: https://www.facebook.com/worldsciencefestival Follow us on twitter: https://twitter.com/WorldSciFest Original Program Date: June 1, 2012 MODERATOR: John Hockenberry PARTICIPANTS: Paul Davies, Seth Lloyd, Thorsten Ritz John Hockenberry's introduction 00:13 Participant Introductions 06:28 How is there a convergence between biology and the quantum? 7:45 Are particles in two places at once or is this based just on observations? 12:43 Are biological states creating a unique quantum rules? 17:32 Quantum mechanics is so counterintuitive. 23:00 Can nature have a quantum sense? 27:29 The quantum migration of birds... With bird brains? 31:50 Electron spin and magnetic fields. 37:00 Cryptochrome releases particles with spin and the bird knows where to go. 40:28 How is bird migration an example for evolution? 49:13 photosynthesis and quantum phenomena. 55:00 Bacteria doing quantum search. 1:00:21 Is quantum tunneling the key to quantum biology? 1:06:56 What are the experiments that prove this? 1:12:28 When fields converge how do you determine causality? 1:19:49 We have no idea how life began. 1:24:59 Replication leads to variation which is the beginning of life? 1:31:05
Views: 503088 World Science Festival
Could an Animal See a Ghost?
 
04:46
We have all seen the videos of a dog or a cat interacting with what seems to be something we can not see. What is really happening? Is something there? Are these animals actually picking up on something that to us is invisible? It's common knowledge that dogs can smell things that humans can not. But a less discussed phenomenon is when dogs or cats are seeing things that we can not. Science has been probing at this for years and we still know very little. What we do know is that certain animal have a specific structure to their eyes that allows them to see Ultra Violet light. Animals can see magneticfields using what is called cryptochromes. Cryptochromes are a common group of light-sensitive molecules that exist in bacteria, plants, and animals. These specialized proteins enable certain animals, such as birds, insects, fish, and reptiles, to sense magnetic fields, allowing them to perceive direction, altitude, and location. It seems that many animals are able to see things humans can not. Many mammals can actually see they Ultra Violet light reflected from urine trails. With all of the evidence that animals are detecting things we can not we have to wonder what the animals are reacting to that remains unknown to us. In some cases the animals can even seem terrified. Let us know what you think these animals are seeing! https://twitter.com/TheInfoSquad https://www.facebook.com/TheInfoSquad http://cattime.com/cat-facts/lifestyle/2489-cats-can-see-things-that-are-invisible-to-humans http://www.petmd.com/news/health-science/what-cats-and-dogs-can-see-humans-cant-you-wont-believe-it-31380
Views: 1086 Info Squad
Dr. Satchin Panda on Time-Restricted Feeding and Its Effects on Obesity, Muscle Mass & Heart Health
 
01:31:34
Dr. Rhonda Patrick speaks with Dr. Satchidananda Panda, a professor at the Salk Institute for Biological Studies in La Jolla, California. Satchin's work deals specifically with the timing of food and it's relationship with our biological clocks governed by circadian rhythm and also the circadian rhythm in general. ▶︎ Get the show notes! https://www.foundmyfitness.com/episodes/satchin-panda In this video we discuss... •The fascinating history of experimentation that ultimately elucidated the location for the region of the brain necessary for a properly timed sleep-wake cycles. • The relationship between our body's "master clock" and it's many peripheral clocks. • Why infants sleep so intermittently, instead of resting for a longer, sustained duration like healthy young adults... and why this sustained rest also goes haywire in the elderly. • The fascinating work Dr. Panda took part in that lead to the discovery of a specialized light receptor in the eye that sets circadian rhythms and is known as melanopsin. • The important relationship between the relatively light insensitive melanopsin, which requires around 1,000 lux of light to be fully activated, and its control of the circadian clock by means of activation of the suprachiasmatic nucleus and suppression of melatonin. • The effects light exposure seems to have on next-day cortisol, a glucocorticoid hormone that regulates around 10-20% of the human protein-encoding genome. • The clever experimental design by which Dr. Panda and his colleagues discovered that certain circadian rhythms, especially of the liver, are entrained by when we eat, instead of how much light we get. This underlines the fact that, when managing are circadian rhythm, both elements are important! • One of the more surprising effects of time-restricted feeding in mice eating a so-called healthy diet: increases in muscle mass and even endurance in some cases. You can try out time-restricted feeding and contribute to human research! Commit to 14 weeks and download Dr. Panda's mobile app to get started. Learn more: http://mycircadianclock.org/participant ▶︎ Visit Satchin Panda's Website: http://www.mycircadianclock.org/ ▶︎ Satchin Panda on Twitter: https://twitter.com/SatchinPanda Links related to FoundMyFitness: ▶︎ Subscribe on YouTube: http://youtube.com/user/FoundMyFitness?sub_confirmation=1 ▶︎ Join my weekly email newsletter: http://www.foundmyfitness.com/?sendme=lifestyle-heuristic ▶︎ Crowdfund more videos: http://www.patreon.com/foundmyfitness ▶︎ Subscribe to the podcast: http://itunes.apple.com/us/podcast/foundmyfitness/id818198322 ▶︎ Twitter: http://twitter.com/foundmyfitness ▶︎ Facebook: http://www.facebook.com/foundmyfitness ▶︎ Instagram: http://www.instagram.com/foundmyfitness
Views: 443179 FoundMyFitness
How Quantum Biology Might Explain Life’s Biggest Questions | Jim Al-Khalili | TED Talks
 
16:10
How does a robin know to fly south? The answer might be weirder than you think: Quantum physics may be involved. Jim Al-Khalili rounds up the extremely new, extremely strange world of quantum biology, where something Einstein once called “spooky action at a distance” helps birds navigate, and quantum effects might explain the origin of life itself. TEDTalks is a daily video podcast of the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes (or less). Look for talks on Technology, Entertainment and Design -- plus science, business, global issues, the arts and much more. Find closed captions and translated subtitles in many languages at http://www.ted.com/translate Follow TED news on Twitter: http://www.twitter.com/tednews Like TED on Facebook: https://www.facebook.com/TED Subscribe to our channel: http://www.youtube.com/user/TEDtalksDirector
Views: 447503 TED
Exploring different optogenetic systems: Photocaging
 
03:26
This video is part of our brand new e-learning course on optogenetics, https://www.embl.de/training/e-learning/optogenetics/index.html. Here we explain the principles behind photocaging – an optogenetics method that allows us to control a protein’s function by tagging it with a photoreceptor, such a LOV domain. Executive producer, stop motion animation & voice over: Richard Grandison Scientific concept & graphic design: Daniel Krueger Video producer & motion graphics: Claudiu Grozea Scientific advisor: Stefano de Renzis
What Animals Have Magnetism?
 
00:45
19 mar 2017 it turns out that many animals have a secret sense that we don't have magnetosensation. Researchers think that these cryptochromes could help some animals navigate you would have seen or heard it many a time birds use the magnetic field of earth for purpose navigation. Animals that have magnetic powers! science abchow do birds and other use natural magnetism for animal how earth's field the amazing weird ways are sense of animalsanimal pbs. The flight paths of migrating birds can span continents 21 jul 2017 now, scientists have identified cells in the nose trout that respond to magnetism, offering a biological explanation for how animals orient 30 sep 2014 exactly dolphins perceive magnetic fields remains unclear, kremers said. Identify grazing animals using google earth and determine if they have aligned themselves with earth's magnetic field 18 jun 2015 move migrate in relation to the. Animal magnetism do large mammals align themselves with scientists discover the body part used to sense earth's animals and magnet news & how to's apex magnets. They can sense the earth's magnetic field, so they do animals have a sixth for field? Jan 27, 2016 by mike keller. Scientists have proposed that animals use magnetic objective. Are birds alone, or are there other creatures the homing pigeon can return to its home using ability sense earth's magnetic field and cues orient itself. 30 nov 2014 the bodies of animals such as birds and the fruit fly contain proteins called cryptochromes. Animal magnetism earth's magnetic field and navigation. Sharks, dogs, birds, and plenty of others all have pretty direct links to 26 sep 2014 unless we magnetic implants or are cyborgs, humans don't really detect the earth's field. Salamanders, frogs, use the magnetic field for orientation when they have to find direction of 18 nov 2003 would a dramatic change in earth's affect creatures oceans no signposts, but leatherbacks and other sea turtles 20 sep 2012. Do animals have a sixth sense for the earth's magnetic field navigate with cells seeker. When these proteins are exposed to blue light, they form molecules with electrons that spin in specific ways depending on the earth's magnetic field. Lobsters have a large variety of animals possess magnetic sense. Weird magnet fact animals sense earth's magnetic field animal magnetism why dogs do their business pointing north. From the university of texas think they may have found answer in previous posts, we've talked about connection between animals and magnetism. Sure, we know that it exists thanks to 14 dec 2016 where does this magnetic sense come from and do have too? Animal magnetism why dogs their business pointing north. Dolphins may use magnetic sense as gps scientific american. Googleusercontent search. Fruit fly drosophila melanogaster needs cryptochrome to respond magnetic fields. Animal magnetism earth's magnetic field and navigation decodedscience animal 50745 url? Q webcache. Animal magnetism how animals nav
Views: 77 Vincent Vincent
Monarch butterfly
 
30:49
The monarch butterfly (Danaus plexippus) is a milkweed butterfly (subfamily Danainae) in the family Nymphalidae. It may be the most familiar North American butterfly. Its wings feature an easily recognizable orange and black pattern, with a wingspan of 8.9–10.2 cm (3½–4 in). (The viceroy butterfly is similar in color and pattern, but is markedly smaller, and has an extra black stripe across the hind wing.) The eastern North American monarch population is notable for its southward late summer/autumn migration from the United States and southern Canada to Mexico, covering thousands of miles. The western North American population of monarchs west of the Rocky Mountains most often migrate to sites in California but have been found in overwintering Mexico sites. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 131 Audiopedia
Joseph Takahashi (UT Southwestern/HHMI) Part 3: Circadian Clocks: Molecular Basis of a Clock
 
34:28
https://www.ibiology.org/genetics-and-gene-regulation/circadian-clocks/#part-4 Lecture Overview: Circadian rhythms are an adaptation to the 24 hr day that we experience. Takahashi begins his talk with an historic overview of how the genes controlling circadian clocks were first identified in Drosophila and the cloning tour de force that was required to identify clock genes in mice. He also describes the experiments that resulted in the realization that all cells in the body have a circadian clock, not just cells in the brain. In part 1B, Takahashi explains that the suprachiasmatic nucleus (SCN) in the brain generates a circadian rhythm of fluctuating body temperature that, in turn, signals to peripheral tissues. Heat shock factor 1 is one of the signaling molecules responsible for communicating the temperature information and resetting peripheral clocks. In Part 2, Takahashi describes how crossing many mice of different genetic backgrounds allowed his lab to identify several genes that impact the output of the clock gene system through different mechanisms. Takahashi begins the last part of his presentation with the crystal structures of BMAL and Clock, the two central activators of clock gene transcription. He goes on to describe how his lab showed that BMAL/Clock controls the DNA binding activity of transcriptional regulators of not only cycling genes, but also of basic cell functions such as RNA polymerase 2 occupancy and histone modification. Speaker Bio: Joseph Takahashi received his BA in biology from Swarthmore College, his PhD in neuroscience from the University of Oregon, and he was a post-doctoral fellow with Martin Zatz at the National Institutes of Mental Health. He then spent 26 years at Northwestern University where he was a faculty member in the Department of Neurobiology and Physiology and in 1997 he became an Investigator of the Howard Hughes Medical Institute. In 2008, Takahashi joined the University of Texas, Southwestern Medical Center as the Loyd B. Sands Distinguished Chair in Neuroscience. Using forward genetic screens in mice, Takahashi identified the first mammalian circadian gene "Clock" in 1997. Since then, his lab has gone on to identify and clone numerous circadian genes in both the brain and tissues throughout the body. Takahashi has received numerous awards and honors for his ground-breaking research including election to the National Academy of Sciences.
Views: 3274 iBiology
Plant physiology
 
22:39
Plant physiology is a subdiscipline of botany concerned with the functioning, or physiology, of plants. Closely related fields include plant morphology (structure of plants), plant ecology (interactions with the environment), phytochemistry (biochemistry of plants), cell biology, genetics, biophysics and molecular biology. Fundamental processes such as photosynthesis, respiration, plant nutrition, plant hormone functions, tropisms, nastic movements, photoperiodism, photomorphogenesis, circadian rhythms, environmental stress physiology, seed germination, dormancy and stomata function and transpiration, both parts of plant water relations, are studied by plant physiologists. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 2211 Audiopedia
Anthropogeny and Medicine-Genes that Harm Health; Sleep and Health; High Altitude Adaptation
 
59:55
2:02 Why Genes That Harm Health Persist - Randolph Nesse 20:38 Shining Evolutionary Light on Human Sleep and Health - Charles Nunn 41:31 Adaptations to High Altitude - Cynthia Beall (Visit: http://www.uctv.tv/) This symposium brings together experts who offer examples of applications of evolutionary biology and comparative medicine to the understanding, prevention, and treatment of various illnesses. Recorded on 10/14/2016. Series: "CARTA - Center for Academic Research and Training in Anthropogeny" [12/2016] [Science] [Show ID: 31598]
Spotlight Interview with Dr Katja A Lamia
 
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Watch an interview with Dr Lamia about her research, produced by BioClock Studio Winter 2017.
Views: 174 The BioClock Studio