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USGS, Menlo Park (Scott Haefner) and U.S. Geological Survey에서 제공하는 콘텐츠입니다. 에피소드, 그래픽, 팟캐스트 설명을 포함한 모든 팟캐스트 콘텐츠는 USGS, Menlo Park (Scott Haefner) and U.S. Geological Survey 또는 해당 팟캐스트 플랫폼 파트너가 직접 업로드하고 제공합니다. 누군가가 귀하의 허락 없이 귀하의 저작물을 사용하고 있다고 생각되는 경우 여기에 설명된 절차를 따르실 수 있습니다 https://ko.player.fm/legal.
Earthquake Science Center Seminars와 비슷한 콘텐츠
An award-winning cannabis podcast for women, by women. Hear joyful stories and useful advice about cannabis for health, well-being, and fun—especially for needs specific to women like stress, sleep, and sex. We cover everything from: What’s the best weed for sex? Can I use CBD for menstrual cramps? What are the effects of the Harlequin strain or Gelato strain? And, why do we prefer to call it “cannabis” instead of “marijuana”? We also hear from you: your first time buying legal weed, and how ...
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Flash Forward is a show about possible (and not so possible) future scenarios. What would the warranty on a sex robot look like? How would diplomacy work if we couldn’t lie? Could there ever be a fecal transplant black market? (Complicated, it wouldn’t, and yes, respectively, in case you’re curious.) Hosted and produced by award winning science journalist Rose Eveleth, each episode combines audio drama and journalism to go deep on potential tomorrows, and uncovers what those futures might re ...
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How can we, humans, look at our relationship to nature differently? In season three of Going Wild, on top of stories about animals, we invite you to journey through the entire ecological web — from the tiniest of life forms to apex predators — alongside the scientists, activists and adventurers who study it. Wildlife biologist and host Dr. Rae Wynn-Grant has been studying wild animals in their natural habitats all over the world for years. Our award-winning podcast takes you inside the hidde ...
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As She Rises brings together local poets and activists from throughout North America to depict the effects of climate change on their home and their people. Each episode carries the listener to a new place through a collection of voices, local recordings and soundscapes. Stories span from the Louisiana Bayou, to the tundras of Alaska to the drying bed of the Colorado River. Centering the voices of native women and women of color, As She Rises personalizes the elusive magnitude of climate cha ...
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Welcome to the weekly podcast of Elevation Church led by Pastor Steven Furtick. To learn more visit our website at http://elevationchurch.org or download the Elevation App. To support this ministry and help us continue to reach people all around the world click here: http://ele.vc/WeX3nP
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The Voice of ASWJ Australia. Listen to & Download Our Latest Programs. Topics: Aqeedah (Creed), Tafsir Qur'an, Islamic Fiqh, History, Youth & Community programs, Medical & Health programs and much much more. Podcasts are in Arabic & English.
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Welcome to the Enjoying Everyday Life TV podcast with Joyce Meyer. To learn more, visit our website at joycemeyer.org or download the Joyce Meyer Ministries App. By supporting Joyce Meyer Ministries, you can help us reach hurting people around the world. To find out more, go to joycemeyer.org/donate
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The Science Show gives Australians unique insights into the latest scientific research and debate, from the physics of cricket to prime ministerial biorhythms.
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1 Amy Schumer & Brianne Howey on the Importance of Female Friendships, Navigating Hollywood's Double Standards, Sharing Their Birth Stories, and MORE 50:05
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좋아요This week, in what might be the funniest episode yet, Molly and Emese are joined by co-stars Amy Schumer and Brianne Howey. They get candid about motherhood, career evolution, and their new film, Kinda Pregnant —which unexpectedly led to Amy’s latest health discovery. Amy opens up about how public criticism led her to uncover her Cushing syndrome diagnosis, what it’s like to navigate comedy and Hollywood as a mom, and the importance of sharing birth stories without shame. Brianne shares how becoming a mother has shifted her perspective on work, how Ginny & Georgia ’s Georgia Miller compares to real-life parenting, and the power of female friendships in the industry. We also go behind the scenes of their new Netflix film, Kinda Pregnant —how Molly first got the script, why Amy and Brianne were drawn to the project, and what it means for women today. Plus, they reflect on their early career struggles, the moment they knew they “made it,” and how motherhood has reshaped their ambitions. From career highs to personal challenges, this episode is raw, funny, and packed with insights. Mentioned in the Episode: Kinda Pregnant Ginny & Georgia Meerkat 30 Rock Last Comic Standing Charlie Sheen Roast Inside Amy Schumer Amy Schumer on the Howard Stern Show Trainwreck Life & Beth Expecting Amy 45RPM Clothing Brand A Sony Music Entertainment production. Find more great podcasts from Sony Music Entertainment at sonymusic.com/podcasts and follow us at @sonypodcasts To bring your brand to life in this podcast, email podcastadsales@sonymusic.com Learn more about your ad choices. Visit podcastchoices.com/adchoices…
Earthquake Science Center Seminars
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USGS, Menlo Park (Scott Haefner) and U.S. Geological Survey에서 제공하는 콘텐츠입니다. 에피소드, 그래픽, 팟캐스트 설명을 포함한 모든 팟캐스트 콘텐츠는 USGS, Menlo Park (Scott Haefner) and U.S. Geological Survey 또는 해당 팟캐스트 플랫폼 파트너가 직접 업로드하고 제공합니다. 누군가가 귀하의 허락 없이 귀하의 저작물을 사용하고 있다고 생각되는 경우 여기에 설명된 절차를 따르실 수 있습니다 https://ko.player.fm/legal.
Open dialogue about important issues in earthquake science presented by Center scientists, visitors, and invitees.
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Manage series 1399341
USGS, Menlo Park (Scott Haefner) and U.S. Geological Survey에서 제공하는 콘텐츠입니다. 에피소드, 그래픽, 팟캐스트 설명을 포함한 모든 팟캐스트 콘텐츠는 USGS, Menlo Park (Scott Haefner) and U.S. Geological Survey 또는 해당 팟캐스트 플랫폼 파트너가 직접 업로드하고 제공합니다. 누군가가 귀하의 허락 없이 귀하의 저작물을 사용하고 있다고 생각되는 경우 여기에 설명된 절차를 따르실 수 있습니다 https://ko.player.fm/legal.
Open dialogue about important issues in earthquake science presented by Center scientists, visitors, and invitees.
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1 Imaging Big Things at Fine Scales with Fiber-Measured Earthquake Wavefields 1:00:00
1:00:00 나중에 재생 나중에 재생 리스트 좋아요 좋아요1:00:00
나중에 재생 나중에 재생 리스트 좋아요 좋아요James Atterholt, USGS Observations of broad-scale lithospheric structure and large earthquakes are often made with sparse measurements and are low resolution. This makes interpretations of the processes that shape the lithosphere fuzzy and nonunique. Distributed Acoustic Sensing (DAS) is an emergent technique that transforms fiber-optic cables into ultra-dense arrays of strainmeters, yielding meter-scale resolution over tens of kilometers for long recording periods. Recently, new techniques have made probing fiber-measured earthquake wavefields for signatures of large-scale deformation and dynamic behavior possible. With fibers in the Eastern California Shear Zone and near the Mendocino Triple Junction, I use DAS arrays to measure a diversity of tectonic-scale phenomena. These include the length scale over which the Garlock Fault penetrates the mantle, the plumbing system of the Coso Volcanic Field at the crust-mantle boundary, the topographic roughness of the Cascadia Megathrust, and the time-dependent rupture velocity of the 2024 M7 Cape Mendocino earthquake. Dense measurements vastly improve the clarity with which we can view these processes, offering new insights into how the lithosphere evolves and what drives the behavior of large earthquakes.…
Doron Morad, University of California, Santa Cruz In natural fault surfaces, stresses are not evenly distributed due to variations in the contact population within the medium, causing frictional variations that are not easy to anticipate. These variations are crucial for understanding the kinematics and dynamics of frictional motion and can be attributed to both the intact material and granular media accommodating the principal slip zone. Here, I explore the effects of heterogeneous frictional environments using two different approaches: fracture dynamics on non-mobilized surfaces and granular systems on mobilized ones. First, I will present a quantitative analysis of laboratory earthquakes on heterogeneous surfaces, incorporating both laboratory-scale seismic measurements coupled with high-speed imaging of the controlled dynamic ruptures that generated them. We generated variations in the rupture properties by imposing sequences of controlled artificial barriers along the laboratory fault. We first demonstrate that direct measurements of imaged slip events correspond to established seismic analysis of acoustic signals; the seismograms correctly record the rupture moments and maximum moment rates. We then investigate the ruptures’ early growth by comparing their measured seismogram velocities to their final size. We investigate the laboratory conditions that allow final size predictability during the rupture early growth. Due to higher initial elastic energies imposed prior to nucleation, larger events accelerate more rapidly at the rupture onset for both heterogeneous and non-heterogeneous surfaces. Second, I present a new Couette-style deformation cell designed to study stress localization in two-dimensional granular media under different flow regimes. This apparatus enables arbitrarily large deformations and spans four orders of magnitude in driving velocity, from sub-millimeter to meters per second. Using photoelasticity, we measure force distribution and localization within the granular medium. High-speed imaging captures data from a representative patch, including both lower and upper boundaries, allowing us to characterize local variations in stress and velocity. For the first time, we present experimental results demonstrating predictive local granular behavior based on particle velocities, velocity fluctuations, and friction, as defined by [tau/sigma_n]. Our findings also reveal that stress patterns in the granular medium are velocity-dependent, with higher driving velocities leading to increased stress localization. These two end-member cases of frictional sliding, one dominated by gouge, and the second by intact surfaces, highlight two fundamental aspects of friction dynamics. The spatial distribution of heterogeneity directly influences stress distribution and, consequently, the stability of the medium. With these experimental methods, we can now measure and even control these effects.…
1 Leveraging high temporal and spatial resolution geodetic data through the earthquake cycle 1:00:00
1:00:00 나중에 재생 나중에 재생 리스트 좋아요 좋아요1:00:00
나중에 재생 나중에 재생 리스트 좋아요 좋아요Cassie Hanagan, USGS Advancing our understanding of earthquake processes inevitably pushes the bounds of data resolution in the spatial and temporal domains. This talk will step through a series of examples leveraging two relatively niche geodetic datasets for understanding portions of the earthquake cycle: (1) temporally dense and sensitive borehole strainmeter (BSM) data, and (2) spatially dense sub-pixel image correlation displacement data. More specifically, I will detail gap-filling benefits of these two datasets for different earthquakes. BSMs respond to a frequency of deformation that bridges the capabilities of more common GNSS stations and seismometers. As such, they are typically installed to capture deformation signals such as slow slip or transient creep. In practice they are also useful for measuring dynamic and static coseismic strains. This portion of the talk will focus on enhanced network capabilities for detecting both coseismic and postseismic deformation with a relatively new BSM array in the extensional Apennines of Italy, with events spanning tens to thousands of kms away. Then, we will transition toward how these instruments can constrain spatiotemporally variable afterslip following the 2019 Mw7.1 Ridgecrest, California earthquake. High spatial resolution displacements from sub-pixel image correlation serve as gap-filling datasets in another way – providing higher spatial resolution (~0.5 m) maps of the displacement fields than any other method to date, and patching areas where other methods fail to capture the full deformation magnitude or extent, such as where InSAR decorrelates. This portion of the talk will focus on new results that define expected displacement detection thresholds from high-resolution satellite optical imagery and, alternatively, from repeat lidar data. Examples will include synthetic and real case studies of discrete and diffuse deformation from earthquakes and fault creep.…
1 Northern California 3D seismic velocity models and earthquake ground motion simulations 1:00:00
1:00:00 나중에 재생 나중에 재생 리스트 좋아요 좋아요1:00:00
나중에 재생 나중에 재생 리스트 좋아요 좋아요Evan Hirakawa, USGS Northern California, specifically the San Francisco Bay Area, is a great place to study earthquake hazards and risk, due to its dense population centers surrounded by active faults, as well as complex geology that strongly influences earthquake ground motions. Computer simulations of seismic wave propagation which can incorporate 3D models of the subsurface properties and complex faulting behavior are good tools for studying seismic hazard, but ultimately require more development before unlocking full potential; specifically, the 3D seismic velocity models need to be further developed in many places and the simulated motions need to be validated with real, recorded data. In this talk, I will summarize a few different research projects on these topics. First I will review recent efforts to improve the USGS San Francisco Bay region 3D seismic velocity model (SFCVM), the leading community velocity model in the area, and describe some of its interesting features. This will be followed by a preview of ongoing work from collaborators and some other promising avenues to explore, in hopes of further improving the model and stoking more community involvement. In the second part of the talk, I will switch gears and move farther north, to the Humboldt County area, where a recent M7 earthquake occurred offshore. I will show some preliminary modeling results, discuss the datasets available from this event, and describe some of the local geology and efforts to better understand subsurface structure.…
1 Engineering modeling for assessing and optimizing seismic resilience 1:00:00
1:00:00 나중에 재생 나중에 재생 리스트 좋아요 좋아요1:00:00
나중에 재생 나중에 재생 리스트 좋아요 좋아요Omar Issa, ResiQuant (Co-Founder)/Stanford University A study by FEMA suggests that 20-40% modern code-conforming buildings would be unfit for re-occupancy following a major earthquake (taking months or years to repair) and 15-20% would be rendered irreparable. The increasing human and economic exposure in seismically active regions emphasize the urgent need to bridge the gap between national seismic design provisions (which do not consider time to recovery) and community resilience goals. Recovery-based design has emerged as a new paradigm to address this gap by explicitly designing buildings to regain their basic intended functions within an acceptable time following an earthquake. This shift is driven by the recognition that minimizing downtime is critical for supporting community resilience and reducing the socioeconomic impacts of earthquakes. This seminar presents engineering modeling frameworks and methods to support scalable assessment and optimization of recovery-based design, including: 1. Procedures for selection and evaluation of recovery-based performance objectives and study the efficacy of user-defined checking procedures. 2. A framework to rapidly optimize recovery-based design strategies based on user-defined performance objectives. 3. Building technology to support utilization of these approaches across geographies and industrial verticals. Together, these contributions provide the technical underpinnings and industry-facing data requirements to perform broad, national-scale benefit-cost analysis (BCA) studies that can accelerate decision-making and engineering intuition as resilient design progresses in the coming years.…
Martijn van den Ende, Université Côte d'Azur Already for several years it has been suggested that Distributed Acoustic Sensing (DAS) could be a convenient, low-cost solution for Earthquake Early Warning (EEW). Several studies have investigated the potential of DAS in this context, and demonstrated their methods using small local earthquakes. Unfortunately, DAS has a finite dynamic range that is easily exceeded in the near-field of large earthquakes, which severely hampers any EEW efforts. In this talk, I will present a detailed analysis of the dynamic range, and how it impacts EEW: where does it come from? What can we do when the dynamic range is exceeded? And is there still hope for DAS-based EEW systems?…
1 The mechanics of (laboratory) earthquakes and aseismic slip due to fluid injection 1:00:00
1:00:00 나중에 재생 나중에 재생 리스트 좋아요 좋아요1:00:00
나중에 재생 나중에 재생 리스트 좋아요 좋아요Sara Beth Cebry, U.S.G.S. luid injection decreases effective normal stress on faults and can stimulate seismicity far from active tectonic regions. Based on earthquake nucleation models and measured stress levels, slip will be stable, aseismic, and limited to the fluid pressurized region—contrary to observed increases in seismicity. To understand how fluid injection effects earthquake initiation, rupture, and termination, I used large-scale laboratory faults to experimentally link effects of direct fluid injection to rupture behavior. Comparison between the nucleation of dynamic events with and without fluid pressure showed that rapid fluid injection into a low permeability fault increases multi-scale stress/strength heterogeneities that can initiate seismic slip. Factors that increase the intensity of the heterogeneity, such as increased injection rate or background normal stress, promote the initiation of small seismic events that have the potential to “run away” and propagate beyond the fluid pressurized region. Whether or not the seismic slip can “run away” depends on the background shear stress levels. When the fault was near critically stressed, dynamic slip initiated quickly after high fluid pressure levels were reached. The dynamic slip event propagated far beyond the fluid pressurized region. In comparison, when the fault was far from critically stressed, dynamic slip initiated hundreds of seconds after high injection pressures were reached and this event was limited in size by the region affected by fluid pressure. We conclude that localized decreases in effective normal stress due to fluid pressure can initiate slip, sometimes seismic slip, but the background shear stress controls whether or not that slip and grows into a large earthquake.…
1 Rapid, physics-informed seismic wavefield predictions using high-performance computing and reduced-order modeling techniques 1:00:00
1:00:00 나중에 재생 나중에 재생 리스트 좋아요 좋아요1:00:00
나중에 재생 나중에 재생 리스트 좋아요 좋아요John Rekoske, University of California San Diego Rapidly estimating the ground shaking produced by earthquakes in real-time, and from future earthquakes, are important challenges in seismology. Numerical simulations of seismic wave propagation can be used to estimate ground motion; however, they require large amounts of computing power and are too slow for real-time problems, even with modern supercomputers. Our aim is to develop a method using both high-performance computing and machine learning techniques to obtain a close approximation of simulated seismic wavefields that can be solved rapidly. This approach integrates physics into the source- and site-specific ground motion estimates used for real-time applications (e.g., earthquake early warning) as well as many-source problems (e.g., probabilistic seismic hazard analysis). Specifically, I will focus this talk on applying data-driven reduced-order models (ROMs) that are based on the interpolated proper orthogonal decomposition method. I will discuss our work using ROMs to (1) instantaneously generate peak ground velocity maps and (2) to rapidly generate three-component velocity seismograms for earthquakes in the greater Los Angeles area. The approach is flexible, in that it can generate 3D elastodynamic Green’s functions which we can use to simulate seismograms for complex kinematic earthquake rupture models. Lastly, I will show how this approach can provide accurate, near-real-time wavefields that could be used to rapidly inform about possible earthquake damage.…
1 Source, path, and site effects and their role on earthquake ground motions 1:00:00
1:00:00 나중에 재생 나중에 재생 리스트 좋아요 좋아요1:00:00
나중에 재생 나중에 재생 리스트 좋아요 좋아요Haiyang Kehoe, USGS Seismograms contain information of an earthquake source, its path through the earth, and the local geologic conditions near a recording site. Ground shaking felt on Earth’s surface is modified by each of these contributions–the spatiotemporal evolution of rupture, three-dimensional subsurface structure, and site conditions all have a substantial impact on hazards experienced by exposed populations. In this talk, I highlight three studies that have improved our understanding of ground motion variability arising from source, path, and site effects. First, I describe the rupture process of the 2017 Mw 7.7 Komandorsky Islands earthquake, which reached supershear speeds following a rupture jump across a fault stepover, and demonstrate the enhanced hazard associated with supershear ruptures across Earth’s complex transform fault boundaries. Second, I compare high-frequency wavefield simulations of Cascadia earthquakes using various tomography models of the Puget Sound region, Washington State to highlight the role of basin structure on ground motion amplification. Third, I show horizontal-to-vertical spectral ratio maps of the continental United States and emphasize the continued importance of region-specific constraints on site characterization. While each study demonstrates progress towards understanding the individual roles of source, path, and site effects on damaging earthquake ground motions, together they underscore distinct challenges for improving seismic hazard models and their uncertainties.…
1 Solving the ground-motion puzzle one piece at a time 1:00:00
1:00:00 나중에 재생 나중에 재생 리스트 좋아요 좋아요1:00:00
나중에 재생 나중에 재생 리스트 좋아요 좋아요Tara Nye, USGS Models of earthquake ground motion (both simulations and ground-motion models) can be likened to a puzzle with three primary pieces representing the earthquake source, site conditions, and source-to-site path. Early versions of these models were developed using average behavior of earthquakes across a variety of regions and tectonic environments. Although informative, such models do not capture the unique source, path, and site effects that are expected to have a significant influence on resulting ground motion. This talk highlights several approaches for improving modeling of ground motion by focusing efforts on the different pieces of the ground-motion puzzle. Segments of the talk include (1) constraining rupture parameters of rare tsunami earthquakes, (2) estimating site-specific high-frequency attenuation in the San Francisco Bay Area, and (3) investigating relationships between path effects and crustal properties in the San Francisco Bay Area. With continued refinement to models of ground motion, we can improve confidence and reduce uncertainty in seismic hazard and risk assessments.…
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Daily Deals
Earthquake Science Center Seminars와 비슷한 콘텐츠
The BMJ brings you interviews with the people who are shaping medicine and science around the world.
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An award-winning cannabis podcast for women, by women. Hear joyful stories and useful advice about cannabis for health, well-being, and fun—especially for needs specific to women like stress, sleep, and sex. We cover everything from: What’s the best weed for sex? Can I use CBD for menstrual cramps? What are the effects of the Harlequin strain or Gelato strain? And, why do we prefer to call it “cannabis” instead of “marijuana”? We also hear from you: your first time buying legal weed, and how ...
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Flash Forward is a show about possible (and not so possible) future scenarios. What would the warranty on a sex robot look like? How would diplomacy work if we couldn’t lie? Could there ever be a fecal transplant black market? (Complicated, it wouldn’t, and yes, respectively, in case you’re curious.) Hosted and produced by award winning science journalist Rose Eveleth, each episode combines audio drama and journalism to go deep on potential tomorrows, and uncovers what those futures might re ...
…
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How can we, humans, look at our relationship to nature differently? In season three of Going Wild, on top of stories about animals, we invite you to journey through the entire ecological web — from the tiniest of life forms to apex predators — alongside the scientists, activists and adventurers who study it. Wildlife biologist and host Dr. Rae Wynn-Grant has been studying wild animals in their natural habitats all over the world for years. Our award-winning podcast takes you inside the hidde ...
…
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As She Rises brings together local poets and activists from throughout North America to depict the effects of climate change on their home and their people. Each episode carries the listener to a new place through a collection of voices, local recordings and soundscapes. Stories span from the Louisiana Bayou, to the tundras of Alaska to the drying bed of the Colorado River. Centering the voices of native women and women of color, As She Rises personalizes the elusive magnitude of climate cha ...
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Welcome to the weekly podcast of Elevation Church led by Pastor Steven Furtick. To learn more visit our website at http://elevationchurch.org or download the Elevation App. To support this ministry and help us continue to reach people all around the world click here: http://ele.vc/WeX3nP
…
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The Voice of ASWJ Australia. Listen to & Download Our Latest Programs. Topics: Aqeedah (Creed), Tafsir Qur'an, Islamic Fiqh, History, Youth & Community programs, Medical & Health programs and much much more. Podcasts are in Arabic & English.
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Welcome to the Enjoying Everyday Life TV podcast with Joyce Meyer. To learn more, visit our website at joycemeyer.org or download the Joyce Meyer Ministries App. By supporting Joyce Meyer Ministries, you can help us reach hurting people around the world. To find out more, go to joycemeyer.org/donate
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The Science Show gives Australians unique insights into the latest scientific research and debate, from the physics of cricket to prime ministerial biorhythms.
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