MinuteEarth
From the creators of the popular science show with millions of YouTube subscribers comes the MinuteEarth podcast. Every episode of the show dives deep into a science question you might not even know you had - but once you hear the answer, you’ll want to share it with everyone you know. Our team of scientists digs into the research and breaks it down into a short, entertaining explanation jam-packed with science facts and terrible puns. We’ll tell the incredible story of how monkeys crossed the Atlantic ocean on natural rafts, and we’ll explain why it gets hotter the de...
We Have No Idea Why
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Bioluminescence: the biochemical emission of light by living organisms such as fireflies and deep-sea fishes. Biofluorescence: The emission of previously absorbed light by fluorescent proteins in a living organism. Luciferin: an organic substance, present in luminescent organisms such as fireflies, that produces light when oxidized by the action of the enzyme luciferase.MinuteEarth is produced by Neptune Studios LLC
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When 90dB is LOUDER than 120dB
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Decibels (dB): a unit used to measure changes in pressure or power. Loudness: the intensity with which a sound is perceived. Weighted decibels (dBA): decibels that try to take into account our sensitivity for different frequencies to better approximate loudness. Frequency: the rate at which something occurs. In the context of sound it usually means 'sound waves per second'. Audible: perceptible for the human ear. High sound: a sound that has a high (fast) frequency Low sound: a sound that has a low (slow) frequency Resonance...Why Weather Forecasts Suck
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Front: a boundary separating air masses of different characteristics, such as air density, wind, temperature, and humidity Frontal rainfall: occurs when a warm air mass comes in contact with a colder air mass Convectional rainfall: occurs when the sun's energy heats the surface of the Earth, causing water to evaporate to form water vapour Nowcasting: weather forecasting limited to periods less than a few hoursMinuteEarth is produced by Neptune Studios LLC
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What Happens When A Volcano Meets a Glacier?
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Decompression Melting: Mantle melting that involves the upward movement of Earth's mostly-solid mantle. Flux Melting: Melting that occurs when water and other volatile components are introduced to hot solid rock. Glaciation: the process, condition, or result of being covered by glaciers or ice sheets. Magma: Hot fluid or semifluid material below or within the earth's crust from which lava and other igneous rock is formed on cooling.MinuteEarth is produced by Neptune Studios LLC
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Shock wave
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What’s Thunder
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How Do Abortion Pills Work?
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Medication abortion/pill-based abortion: an abortion that uses pills, rather than surgical intervention Self-managed abortion: a pill-based abortion done by an individual without medical guidance Progesterone: a hormone made by the body that plays a role in the menstrual cycle and pregnancy Cervix: the narrow passage forming the lower end of the uterus Contraction: a shortening of the uterine musclesMinuteEarth is produced by Neptune Studios LLC
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Why Continents Are High
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Tectonic plate: Earth’s rigid outer layer is broken up into a bunch of pieces, called tectonic plates. Usually people think of tectonic plates as the Earth’s crust, but the plates are actually made of the crust PLUS the very top of the mantle, which is cool enough to be rigid and hard and stuck to the crust. The crust and the top of the mantle together are called the “lithosphere.” Underneath that is a part of the mantle called the “asthenosphere,” which is the part that oo...Our Lungs Have A Fatal Flaw
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Alveolus: any of the many tiny air sacs of the lungs which allow for rapid gaseous exchange. Bronchiole: any of the minute branches into which a bronchus divides. PM 2.5: tiny particles or droplets in the air that are two and one half microns or less in width. PM 10: inhalable particles, with diameters that are generally 10 micrometers and smaller. Nasopharynx: the upper part of the pharynx, connecting with the nasal cavity above the soft palate.MinuteEarth is produced by Neptune Studios LLC
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Vampire Life is Hard
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Hematophagy: the practice by some species of feeding on the blood of other animals. Hemoglobin: a protein in red blood cells that carries oxygen. Free radicals: unstable atoms that can damage cells. Anticoagulant: a substance that inhibits the coagulation of the blood.MinuteEarth is produced by Neptune Studios LLC
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Do Other Diseases Have "Long" Versions?
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Sequelae: Chronic complications of an acute condition. RSV: Respiratory Syncytial Virus infects a majority of children before the age of two. SARS: Severe Acute Respiratory Syndrome is a coronavirus-caused respiratory disease responsible for an outbreak in 2002-2003. Cytokine Storm: A sudden increase in pro-inflammatory cytokines that causes a severe immune reaction. Fibrosis: Pathological wound healing that leads to the formation of scar tissue.MinuteEarth is produced by Neptune Studios LLC
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Whale Sounds
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Stable Stations
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The Actual Reason Men Die First
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Chromosome: a threadlike structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of genes. Gene: the basic unit of heredity passed from parent to child. Mutation: the changing of the structure of a gene, resulting in a variant form that may be transmitted to subsequent generations, caused by the alteration of single base units in DNA, or the deletion, insertion, or rearrangement of larger sections of genes or chromosomes. Recessive allele: a type of allele...Why Is There So Much Land In The North?
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Continental drift: An early theory of land movement that posited that the continents floated on the ocean bed. Tetrahedral hypothesis: An early theory that attempted to explain the arrangement of Earth’s continents and oceans based on the geometry of a tetrahedron. Plate tectonics: The generally accepted theory that the Earth’s surface is made up of a series of tectonic plates that slowly move around on top of the mantle. Pangea: The most recent supercontinent to form on Earth, during the late Paleozoic era. Great Rift...The Super Secrets of Sewage
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Microbiome - the microorganisms in a particular environment (including the body or a part of the body). Wastewater - water that has been used in the home, in a business, or as part of an industrial process. Viral shedding - releasing a virus into the environment through sneezing, coughing, or feces.MinuteEarth is produced by Neptune Studios LLC
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They all do the same, but we still need them
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Ecological redundancy (also: functional redundancy or functional equivalence): the ecological phenomena that multiple species representing a variety of taxonomic groups can share similar roles in ecosystem functionality Legume: a plant in the Fabaceae family Nitrogen fixation: the chemical process by which atmospheric nitrogen is assimilated into organic compoundsMinuteEarth is produced by Neptune Studios LLC
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Where Will The Next Pandemic Come From?
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Zoonosis: A disease that can be transmitted to humans by animals Hyper reservoirs: Animals that naturally are home to multiple infectious agents. Spillover: Transmission of a zoonosis from an animal reservoir to a human. Life history strategy: An evolutionary strategy that involves tradeoffs among growth, survival, and reproduction.MinuteEarth is produced by Neptune Studios LLC
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Bertha Benz
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Favorite Green
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Why Water Dissolves (Almost) Everything
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solvent: a substance that dissolves a solute solubility: the relative ability of a solute to dissolve into a solventMinuteEarth is produced by Neptune Studios LLC
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Screens are NOT the reason kids need glasses 👀
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Lens: A transparent biconvex structure in the eye that can change its shape to change the focal distance. Retina: A layer at the back of the eyeball containing cells that are sensitive to light. Fovea: A small depression in the retina where visual acuity is highest. Myopia: A common vision condition in which distant objects are blurry. Hyperopia: A vision condition in which nearer objects are blurry. Emmetropization: The process by which the eye grows in order to maximize visual acuity. Dopamine: A neurotransmitter in the...The Freshwater Paradox
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Speciation: The formation of new and distinct species. Sympatric speciation: The evolution of new species from ancestral species while both continue to inhabit the same geographic region. Allopatric speciation: Speciation that occurs when a population becomes separated by a geographic barrier. Adaptive radiation: The diversification of a group of organisms into forms filling different ecological niches.MinuteEarth is produced by Neptune Studios LLC
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Why Do Humans Vomit So Much? 🤮
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Emesis: The act of vomiting Vomiting: The oral eviction of gastrointestinal contents due to contractions in the gut and stomach. Nausea: A diffuse sensation of uneasiness and discomfort often felt as the need to vomit. Vomiting Center: An area in the brain’s medulla oblongata that initiates and controls emesis. Chemoreceptor Trigger Zone: An area in the area postrema of the medulla oblongata that is sensitive to certain toxic chemicals in the blood. Nucleus Tractus Solitarius: A region in the medulla oblongata that receives input from th...Is Soil Alive?
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Soil health: the continued capacity of soil to function as a vital living system, within ecosystem and land-use boundaries, to sustain biological productivity, promote the quality of air and water environments, and maintain plant, animal, and human health Living system: an open self-organizing life form that interacts with its environment Ecosystem services: varied benefits to humans provided by the natural environment and from healthy ecosystemsMinuteEarth is produced by Neptune Studios LLC
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Disasters Price
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Cheaper Alternatives
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Bitcoin mining is a lot like reindeer mating 🪙💖🦌
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Bitcoin: a digital currency known as a cryptocurrency, which uses a proof-of-work consensus to validate transactions and create new units of Bitcoin. Proof-of-work: a decentralized consensus mechanism that requires members of a network to expend effort solving an arbitrary mathematical puzzle to prevent malicious activity Blockchain: a record of transactions made in Bitcoin or another cryptocurrency maintained across several linked computers, which can also be used in non-cryptocurrency applications Mining: the process of validating transactions and creating new Bitcoin or other cryptocurrencies Sexual selection: a form...The Cheapest Way To Save A Life
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Vitamin A: A group of nutrients called retinoids used in several different processes in the human body. Malaria: A serious disease carried by parasites in a certain type of mosquito that feeds on humans. Value of Life: The economic value used to quantify the benefit of avoiding a fatality Upstream interventions: Approaches to healthcare that address root causes rather than symptoms. Night Blindness: An early symptom of Vitamin A deficiency in which the eye is unable to process low levels of light.MinuteEarth is produced...
Which is Worse?
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Aqueous humour: The clear fluid filling the space in the front of the eyeball between the lens and the cornea. Bone remodeling: The continuous process of synthesis and destruction that gives bone its mature structure and maintains normal calcium levels in the body. Ligament: A short band of tough, flexible fibrous connective tissue which connects two bones or cartilages or holds together a joint. Sprain: A stretching or tearing of ligaments.MinuteEarth is produced by Neptune Studios LLC
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Why The Ocean Needs Salt
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Salt: chemical compounds made of positively- and negatively-charged particles called “ions” like sodium and chloride Convection current: the movement of fluid, like water, due to a difference in temperature and/or density Hydrothermal vent: a fissure on the seafloor that takes in dense ocean water and discharges water heated by volcanic activity below the seafloor.MinuteEarth is produced by Neptune Studios LLC
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Why The Weather Is Worse At The Mall
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Evapotranspiration: the return of water to the atmosphere from the ground surface. Troposphere: The lowest region of the Earth’s atmosphere, extending usually to around 10 km above the Earth’s surface. Tropopause: The top-most boundary of the troposphere. Low Pressure System: An area of relatively low pressure that draws air into it, causing converging winds. Micro-climate: The climate of a very small or restricted area. Heat Island: An urban area that has higher average temperatures than its surrounding due to the heat absorption of materials like conc...Coal Harm
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Specific Energy
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How Birds Fooled Military Radar
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Radar aeroecology - the use of radar to study airborne life, like birds, bats, and bugs Radar ornithology - the use of radar to study birds, especially bird migration Dual-polarization radar - radar that transmits and receives waves in both a horizontal and vertical orientation, giving a better idea of a target’s size, shape, and variety. Doppler effect - a change in a wave’s frequency in relation to whatever is observing it, such as a radar, but also your ears (it’s the reason a soun...The Most Common Allergy In The World
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Allergy: A damaging immune response by the body to a substance. Allergen: The substance that causes the allergic reaction. Urushiol: The allergen in poison ivy and poison oak. Allergic Contact Dermatitis: An allergic response caused by contact with a substance that causes rash or lesions at the site of the exposure. Langerhans Cell: An immune sentinel that lives in the epidermis of the skin but can travel to nearby lymph nodes. Helper T Cell: A type of white blood cell that activates immune responses in the...Why The Shortest Day Of The Year Isn't The Coldest
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Astronomical seasons - seasons that are defined by equinoxes and solstices (not temperature or weather) Equinox: the time/dates at which the sun crosses the celestial equator, when day and night are of approximately equal length Solstice: the time/dates at which the sun reaches its maximum or minimum declination, marked by the longest and shortest days Seasonal lag: the phenomenon by which the hottest/coldest days of the year are delayed until after the days with the most/least sunlightMinuteEarth is produced by...
The Plankton Paradox
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Competitive Exclusion Principle: The idea that two similar species cannot inhabit the same ecological niche. Phytoplankton: Microscopic flora that drift with the ocean currents. Lotka-Volterra Competitive Equations: A simple model of the population dynamics of species competing for the same resources.MinuteEarth is produced by Neptune Studios LLC
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Why Some Fruits Won’t Ripen On Your Counter
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climacteric: a pattern of fruit ripening associated with increased ethylene production and a rise in cellular respiration (meaning that the fruit can ripen off the plant) nonclimacteric: ripening that is not characterized by a peak of ethylene production or respiration (and must happen on the plant)MinuteEarth is produced by Neptune Studios LLC
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Jet Fuel
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