Evolution Talk

Evolution Talk

Synopsis

Voice artists, music, and effects bring Charles Darwin and others to life in this educational introduction to the oldest story ever told. Brought to you by Rick Coste Productions.

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Episodes

  • Update: Video Series
    Update: Video Series
    Duration: 58s | 14/08/2019

    There is now a new way to enjoy the show.  A video series is being created to add visuals to the podcast.  Learn more at EvolutionTalk.com !

  • Mary Anning
    Mary Anning
    Duration: 13min | 22/02/2016

    In 1811 , or 1812, a young girl by the name of Mary Anning, along with her little brother, happened upon an incredible find while digging around the cliffs of Lyme Regis in England. It was a skull. A very large skull.

  • Rosalind Franklin
    Rosalind Franklin
    Duration: 14min | 08/02/2016

    It’s safe to say, and very few would disagree, that without Rosalind Franklin the double helix structure would not have been discovered when it was, nor perhaps by the same team of discoverers.

  • An Interview With Emma Darwin
    An Interview With Emma Darwin
    Duration: 14min | 25/01/2016

    Way back in Episode 30 I stepped into a time machine and traveled back to 1869 in order to interview Charles Darwin. This time around I brought someone forward in time... his wife Emma Darwin.

  • Convergent Evolution
    Convergent Evolution
    Duration: 14min | 18/01/2016

    Convergent evolution has shown us that nature will find similar solutions under similar conditions. So too might it be on other planets. Life might not look that much different that it does here

  • Cladistics
    Cladistics
    Duration: 12min | 11/01/2016

    A cladogram will show those animals that share similar form and structures. It’s not about animals which have evolved from one another. In this episode we are going to look at clades and cladistics. We will also create a cladogram... an audio cladogram.

  • An Interview With Jonathan Tweet
    An Interview With Jonathan Tweet
    Duration: 16min | 04/01/2016

    Jonathan Tweet has authored a very remarkable book for children. He wasn’t just trying to make evolution and its concepts easier to understand for kids in elementary school, Jonathan was shooting for an even younger audience. The result is the book 'Grandmother Fish'.

  • Are We Still Evolving?
    Are We Still Evolving?
    Duration: 14min | 28/12/2015

    There are some who say that evolution by natural selection, at least when it applies to you and I, is no longer a driving force. The argument is that we are no longer evolving and that we’ve pushed natural selection aside and taken the reign of our own development.

  • Your Brain
    Your Brain
    Duration: 19min | 21/12/2015

    Over the course of billions of years a small region of specialized cells began to develop sensory organs. These light sensitive cells slowly developed into eyes. Behind them another organ began to develop. It’s still there, buried beneath everything else that has developed to become your brain today.

  • Homo Naledi
    Homo Naledi
    Duration: 22min | 14/12/2015

    In 2013 a secret that had been hidden for hundreds of thousands of years in a South African cave was discovered. Bones... many bones. Upon inspection by a team of specialists a picture began to emerge. At the center of it all is a new species of hominin - Homo Naledi.

  • The Evolution of Music
    The Evolution of Music
    Duration: 23min | 07/12/2015

    In this episode of Evolution Talk we take a look at some of the theories which have attempted to trace the evolution of music, from Charles Darwin to philosopher Daniel Dennett.

  • Math and Maupertuis
    Math and Maupertuis
    Duration: 11min | 30/11/2015

    Pierre-Louis Moreau de Maupertuis was fascinated with the origin and evolution of life. If there was a creator, finding the keys to his work had to involve careful study of the facts and an examination of the natural world with critical eyes.

  • Coevolution
    Coevolution
    Duration: 12min | 23/11/2015

    Coevolution often involves an arms race. You have a predator and prey both upping the game. Like a bat and a moth. Each one trying to outdo the other. If the change in one organism is linked to a change in another organism, genetically speaking, then coevolution is said to have occurred.

  • Why Water?
    Why Water?
    Duration: 11min | 16/11/2015

    Without water there would be no life. We are lucky. Extremely lucky that it is here at all. Especially in its liquid form. It doesn’t need to be. In fact, as far as the universe is concerned, water in its liquid form is almost a rarity.

  • Misconceptions About Evolution  Natural Selection
    Misconceptions About Evolution & Natural Selection
    Duration: 15min | 09/11/2015

    In this episode of 'Evolution Talk' I am joined by a very special guest - Stephanie Keep from the National Center for Science Education (NCSE). Among her many talents as a writer and educator, Stephanie also loves to correct misconceptions that involve the science and study of evolution.

  • An Explosion of Cambrian Proportions
    An Explosion of Cambrian Proportions
    Duration: 15min | 02/11/2015

    In the era known as the Cambrian, an era which kicked off 541 million years ago, life exploded. Natural Selection began to produce new creatures, one after the other. A parade of unique forms and shapes that had never been seen before.

  • An Appendix
    An Appendix
    Duration: 13min | 26/10/2015

    For years the appendix has been considered a vestigial organ. In 2007 researchers at Duke University began to take another look at the appendix. While taking their closer look something interesting began to emerge. Something that had always been there but had remained hidden, or unobserved for centuries. Your appendix, that little organ that we so often remove and forget, just might be useful after all.

  • Radiation and DNA
    Radiation and DNA
    Duration: 13min | 19/10/2015

    What does radiation do to us exactly and why do we care? The American geneticist Hermann Joseph Muller worried about it back in the 1920s.

  • Mendel and His Peas
    Mendel and His Peas
    Duration: 17min | 12/10/2015

    In 1865 Gregor Mendel pulled together his work on heredity in peas and produced a paper which he read to a group of his peers. Unfortunately for Mendel, the world would't be ready to listen until decades after his death.

  • Our Unique Species
    Our Unique Species
    Duration: 11min | 05/10/2015

    In the last episode I asked the question ‘Are we unique?’ and then set about showing why it is we are not by looking at the animal kingdom. From tool use to altruism it appears that we are not as special as we might think. But, of all of earth’s creatures we seem to be the only species cursed with the ability to ask ‘why ?’ We alone appear to have the ability to look back into the past to help us to explain the present and to prepare for the future. Is it, as Darwin said, only a matter of degree, or is it something more?

  • Are We Unique?
    Are We Unique?
    Duration: 14min | 28/09/2015

    In what ways are we special or unique? Is it because we can think, like Rene Descartes said? Or is thinking just a chemical process that directs our actions as La Mettrie would have us believe? You might be shocked to know that we don’t really know. Science hasn’t been able to touch it.

  • Hairless Apes
    Hairless Apes
    Duration: 16min | 21/09/2015

    If chimps are our closest relative why aren’t we hairy like they are? The answer lies somewhere in the far distant past. Imagine how hot it must have been on the savannah after our ancestors left the safety of the trees to hunt for food. Homo Erectus did this almost 2 million years ago, and perhaps as recently as 70,000 years ago. They made their homes on the savannahs. They ran, played, and hunted. They fought for survival. And one of the byproducts of all of that activity is sweat. Wouldn’t it be a benefit to have less hair?

  • Master Switches
    Master Switches
    Duration: 18min | 14/09/2015

    Nestled comfortably within our DNA are a set of switches. Like the light switches you casually flip on and off in your home, they are responsible for making you who you are. And just like that one regulating switch which controls the current of electricity to your home, you have one which controls certain sets of genes. It’s called the PAX gene.

  • The Predictive Power of Evolution
    The Predictive Power of Evolution
    Duration: 20min | 07/09/2015

    We can make broad predictive strokes when it comes to how an organism will evolve. But that’s all we can do. What those changes will look like, if they happen at all, is beyond our power to know. Does this mean that theories about evolution are outside of the realm of true science?

  • The Strange Case of Richard Owen
    The Strange Case of Richard Owen
    Duration: 25min | 31/08/2015

    Every good story needs a villain. And there has been quite a few in the history of evolution theory. History has not been kind to Richard Owen. But just like the story of Dr Jekyll and Mr Hyde, Owen had his good side. Not that his good side cared about the proper treatment of his fellow man, his good side cared more about the proper treatment, and appreciation of, science.

  • Epigenetics
    Epigenetics
    Duration: 16min | 24/08/2015

    In 2005 biologist Michael Skinner witnessed something that shouldn’t have happened. His mice were exposed to a toxin. A toxin which caused the children of these mice to experience birth defects. This wasn’t the surprise since the mice could easily have been exposed while in their mother’s womb. This could explain the defects. What it couldn’t explain was the fact that the next generation also had this defect.

  • 99%
    99%
    Duration: 17min | 17/08/2015

    If you’ve ever wondered why mice have been, and continue to be, science’s favorite research tools it’s becaus we are a lot a like. Yes, that little four legged furry bundle of whiskers and pink feet shares 99% of its genes with us. 75-80 million years ago that 99% was 100%. That was when our most recent common ancestor walked the earth. That ancestor split off into different directions. One lineage led to and the other led to mice.

  • The Hobbits of Flores
    The Hobbits of Flores
    Duration: 18min | 10/08/2015

    In 2003 something was found in a large limestone cave located in Liang Bua, Flores. It was a small skull which was at first identified as being that of a small child. Upon further examination there was something odd about the skull. It didn’t appear to be exactly what the researchers assumed it to be.

  • Evolutionary Psychology
    Evolutionary Psychology
    Duration: 21min | 03/08/2015

    Evolutionary psychology seeks to explain why we feel the way we do in certain situations. It also looks to understand what psychological adaptations were naturally selected to accompany us on our journey forward through time. Just like an archaeologist digs into the sands of time to piece together the physical world, it may be possible to do the same for the psychological world.

  • The Missing Link
    The Missing Link
    Duration: 13min | 27/07/2015

    Darwin himself never used the term ‘missing link’. He wasn't concerned with a missing link but he was concerned with gaps in the fossil record. It wasn’t that he thought these gaps hurt his theory. So where did this term come from and why is it still used?

  • Self-Directed Evolution
    Self-Directed Evolution
    Duration: 15min | 20/07/2015

    Mankind has only just begun to unlock the secrets hidden within our DNA. As we move from gene to gene we will begin to see how it all ties together, and where evolution made a few mistakes. It will be within our power to correct those mistakes.

  • Mitochondrial Eve
    Mitochondrial Eve
    Duration: 12min | 13/07/2015

    Mitochondrial DNA is only inherited from your mother. Everyone alive on earth today can trace their lineage back to Mitochondrial Eve. We know this because we’ve all received our Mitochondrial DNA from her. It has been passed down generation by generation from mother to daughter.

  • The Anthropocene
    The Anthropocene
    Duration: 19min | 06/07/2015

    The Cretaceous period ended 65 million years ago as did the reign of the dinosaurs. According to the International Union of Geological Sciences, we are currently in the Holocene. The Holocene has seen a number of changes. It’s seen us cultivate the land, store food, and build long standing shelters. It’s also seen us craft tools to shape the world around us. Some scientists have proposed calling this era the Anthropocene.

  • Having a Laugh
    Having a Laugh
    Duration: 14min | 29/06/2015

    It’s probably safe to say that everyone enjoys a good laugh. But where did it come from? What is it about laughter that gave us an advantage over our ancient competitors?

  • Punctuated Equilibrium
    Punctuated Equilibrium
    Duration: 11min | 22/06/2015

    In 1972 Stephen Jay Gould and Niles Eldridge published a paper that immediately went viral among biologists. Gould and Eldridge pointed out, using the fossil record as evidence, that evolution by natural selection worked in a series of starts and stops. There were periods of stasis where no changes occurred. They called this theory Punctuated Equilibrium.

  • The Piltdown Man
    The Piltdown Man
    Duration: 18min | 15/06/2015

    In the late 19th century, Europe was having a grand old time when it came to fossils of ancient hominids. The problem was - nothing was being discovered in England. Germany had the Neanderthal and France had the Cro-Magnon. In the summer of 1912 all of that changed.

  • Darwin’s Bulldog
    Darwin’s Bulldog
    Duration: 13min | 08/06/2015

    On June 30, 1860 a great debate took place at the Oxford University Museum. This debate helped to launch Thomas Huxley's career as 'Darwin's Bulldog".

  • Neanderthalis Extinctus
    Neanderthalis Extinctus
    Duration: 16min | 01/06/2015

    In the last episode we came face to face with the Neanderthal. What happened to the Neanderthal? Did they die on the battlefield or did they live out their lives in a quiet struggle for survival while modern humans settled around them? Was they killed... or assimilated?

  • The Neanderthal
    The Neanderthal
    Duration: 14min | 25/05/2015

    in the Neander valley limestone miners had found something which shocked them. They had found bones which they first thought belonged to a bear. Once Professor Schaafhausen had seen the bones he recognized them for what they were. Shortly after that the Neanderthal Man stepped into the spotlight. Were Neanderthals our early ancestors or were they a separate species?

  • Genetic Drift
    Genetic Drift
    Duration: 13min | 18/05/2015

    Frog populations remained pretty much the same in Podville until the Great Fire of 2015. After the fire the population of blue frogs increased. Welcome to genetic drift, the subject of this week's episode of 'Evolution Talk'.

  • Non-Overlapping Magisteria
    Non-Overlapping Magisteria
    Duration: 17min | 11/05/2015

    In 1997 Professor Stephen Jay Gould published an essay in Natural History which also appeared in his book Rocks of Ages. This essay was titled ‘Non-Overlapping Magisteria’. It’s commonly referred to as NOMA. The concept behind NOMA is that science and religion operate in two different, non-overlapping, realms.

  • Altruism
    Altruism
    Duration: 18min | 04/05/2015

    Where does altruism come from? How did it evolve in a world ruled by 'selfish genes'?

  • Survival of the Fittest?
    Survival of the Fittest?
    Duration: 13min | 27/04/2015

    The term 'Survival of the Fittest' was unleashed on the world in 1864 by Herbert Spencer when he published his work Principles of Biology. It was later picked up by Charles Darwin who used it himself in the fifth edition of On the Origin of Species five years later. But is it fair to say that the term "Survival of the Fittest" is synonymous with evolution by natural selection? In this episode of Evolution Talk we explore this very question.

  • Putting the Selection in Sex
    Putting the Selection in Sex
    Duration: 13min | 20/04/2015

    For Charles Darwin, the idea of sexual selection explained a lot of what he saw in the animal kingdom. He gave sexual selection just as much importance as natural selection.

  • Warm Blooded Dinosaurs
    Warm Blooded Dinosaurs
    Duration: 10min | 13/04/2015

    In 1986 Professor Robert Bakker, a paleontologist, published 'The Dinosaur Heresies'. According to Professor Bakker there have been waves of extinction, and these extinction events mainly attacked, or affected, one particular type of animal... warm blooded animals.

  • Where Are the Dinosaurs?
    Where Are the Dinosaurs?
    Duration: 13min | 06/04/2015

    What killed off the dinosaurs? There are many competing theories yet there is no ‘smoking gun’. There is evidence however, and with each bit of evidence comes another theory. Dinosaurs didn’t disappear overnight. It took a few millions years for them to die out. Perhaps six million years.

  • A Whale of a Tale
    A Whale of a Tale
    Duration: 12min | 30/03/2015

    Today’s episode of Evolution Talk is brought to you by all of those animals out there who exhibit vestigial features (which is pretty much every animal out there). Our DNA contains traces of our past - switches in our genes that have either been shut off or turned over the years while natural selection’s fingers hovers over the controls.

  • An Interview With Charles Darwin
    An Interview With Charles Darwin
    Duration: 15min | 23/03/2015

    To mark the occasion of Evolution Talk's 30th episode, Rick Coste steps into the past to interview Charles Darwin.

  • Mistakes Were Made
    Mistakes Were Made
    Duration: 11min | 16/03/2015

    In the X-Men movies the X-Men are mutants. Mistakes were made during DNA replications that brought out features and abilities which were not present in the population prior to their births. Defects which enhanced their chances of survival.

  • Is Everything Related?
    Is Everything Related?
    Duration: 12min | 09/03/2015

    The Human genome project took 13 years to complete. Hundreds of scientists from all over the world were involved. What’s just as amazing as the completion of the project is the story that it tells when you begin to compare it with other chapters in the book of life.

  • Fossil Dating
    Fossil Dating
    Duration: 12min | 02/03/2015

    How do we date fossils? There are a few ways and in this episode we will look at a couple.

  • Robert Chambers
    Robert Chambers
    Duration: 18min | 23/02/2015

    Robert Chambers' masterpiece was titled 'Vestiges of the Natural History of Creation'. In it he explained how everything evolved. Everything from simple, less complex forms, to more complex forms over time.

  • The Case of Patrick Matthew
    The Case of Patrick Matthew
    Duration: 18min | 16/02/2015

    Patrick Matthew published 'On Naval Timber and Arboriculture' in 1831. There were a few positive reviews but they were somewhat tepid in their praise. Only a couple reviewers happened to notice something else that Matthew had mentioned in his book. A certain passage that appeared in the book’s appendix. This passage would would later catch the eyes of Charles Darwin.

  • The Work of WC Wells
    The Work of WC Wells
    Duration: 12min | 09/02/2015

    William Charles Wells, in no uncertain terms, pointed out that mankind is not immune to nature’s ability to modify an organism's features over time.

  • Unlucky Lamarck
    Unlucky Lamarck
    Duration: 19min | 02/02/2015

    Jean Baptiste Lamarck's mechanism for evolution was wrong, as history shows, and that fact has haunted his memory ever since. But ideas and theories have ways of being resurrected and, in recent years, there are hints out there that Lamarck wasn’t completely off base when he proposed his theory for the evolution of species.

  • Erasmus Darwin
    Erasmus Darwin
    Duration: 17min | 26/01/2015

    Erasmus was a country physician. He believed that women should have access to the same education that men did, and that slavery should be abolished. He also believed that life evolved from a single filament that wiggled out of the mud in the distant past.

  • Hutton’s Hypothesis
    Hutton’s Hypothesis
    Duration: 14min | 19/01/2015

    James Hutton saw the power of natural selection, but he didn’t see how it could eventually, over vast spans of time, mold an animal into something completely different. That would have to wait until Charles Darwin entered the scene over 50 years later.

  • Diderot’s Dream – Updated
    Diderot’s Dream – Updated
    Duration: 16min | 12/01/2015

    Diderot devoured the written word. It was food for his mind and he couldn’t get enough of it. He was ravenous when it came to ideas. Especially when those ideas took him into places that others feared to tread.

  • Of Mermaids and Men
    Of Mermaids and Men
    Duration: 20min | 05/01/2015

    Benoit de Maillet believed that life, all life, came from the sea. And not only did it come from the sea, but it continued to evolve into different species as it encountered different environments. To present these ideas would be dangerous to him so he wrote it as a work of fiction called Telliamed.

  • Lucretius – Evolution’s Poet
    Lucretius – Evolution’s Poet
    Duration: 14min | 29/12/2014

    In the first century BC the Roman poet Lucretius wrote On the Nature of Things. A poem with 7400 lines of verse that covered everything from the tiniest particles of matter and how they move, as well as the nature of time and space, consciousness, mortality, and the arrival of life from animals to man.

  • The Father of Zoology
    The Father of Zoology
    Duration: 15min | 22/12/2014

    Aristotle actually came close to explaining natural selection, 2200 years before Charles Darwin and Alfred Russel Wallace did.

  • Darwin and God
    Darwin and God
    Duration: 13min | 15/12/2014

    Charles darwin questioned everything when it came to the origin of species and the evolution of life here on earth. That questioning led him into some pretty dark places. As he grew more and more certain that nature was fully capable of producing the abundance of life around us without the assistance of a deity, the more he became afraid to say anything on the subject.

  • Darwin or Design
    Darwin or Design
    Duration: 15min | 08/12/2014

    As a young man, the more Charles Darwin learned about nature the more he began to question things. If species were immutable, meaning they never changed, then how was it that breeders were able to change the forms of dogs or pigeons? What if something similar occurred in nature? According to William Paley nature required a designer. Charles began to think that Nature was the designer. A blind designer with no goal in mind at all.

  • Darwin’s Doubts
    Darwin’s Doubts
    Duration: 13min | 01/12/2014

    Throughout his life Charles Darwin suffered bouts of anxiety and often went off alone by himself to think. His work afforded him the perfect escape and he dove into it at every opportunity.

  • The Beginning: Out of the Sea
    The Beginning: Out of the Sea
    Duration: 15min | 24/11/2014

    The sea was full of life a half a billion years ago. Arthropods fought to survive and there were some interesting things happening on land as well. We have here our first plants - and they spread like wildfire. The quiet life on land enjoyed by the plants looked appealing to that first vertebrate that poked its head out of the water as it supported itself with its new backbone and fins.

  • The Beginning: An Arms Race
    The Beginning: An Arms Race
    Duration: 11min | 17/11/2014

    As predators evolved to better catch their prey, their prey evolved unique and efficient ways to avoid being eaten. It was because of this sudden arms race that we see the proliferation of body forms that mark the Cambrian Era. The real winners were the Trilobites.

  • The Beginning: Multicellularity Rules
    The Beginning: Multicellularity Rules
    Duration: 12min | 10/11/2014

    The reason natural selection had such a grand old-time with multicellular organisms is because it gave it something to select for. These organisms increased in size, moved into new areas for food, and protected themselves against the environment. It is during this period that some peculiar forms began to emerge.

  • The Beginning: Sexual Reproduction
    The Beginning: Sexual Reproduction
    Duration: 16min | 03/11/2014

    One day, millions of years ago, something occurred between two unsuspecting eukaryotes. When they bumped into one another something magical happened. They both left that encounter slightly different than they had been before. What passed from one to the other was a few microscopic bits of genetic material. Natural selection had new toys to play with.

  • The Beginning: Cyanobacteria
    The Beginning: Cyanobacteria
    Duration: 13min | 27/10/2014

    3.5 billion years ago microbial organisms appeared on the earth. These organisms combined, split, and combined some more, until the formation of microbes and single-celled algae. One of these single-celled algae-like organisms were cyanobacteria.

  • The Beginning: Life
    The Beginning: Life
    Duration: 12min | 20/10/2014

    In the beginning the Earth wasn’t exactly a hospitable place. It was hot, volcanic, and oxygen was a rare commodity. So the question now is how did life emerge from these conditions? We are still asking this 4.6 billion years later. Darwin proposed a primordial pond that was teeming with the just the right materials for life to form. If so, what happened in this little pond 3.9 billion years ago set the stage for everything the followed.

  • Only A Theory
    Only A Theory
    Duration: 15min | 13/10/2014

    Charles Darwin had a hypothesis was that animals evolved due to a process he called natural selection. He strengthened his hypothesis with tests and observation. Evolution by natural selection has held up to every test. It is because of this that it long ago graduated from being a hypothesis to being a theory. It is a valid explanation for the fact of evolution.

  • Alfred Russel Wallace
    Alfred Russel Wallace
    Duration: 16min | 06/10/2014

    In 1858, Charles Darwin received a paper authored by a young naturalist named Alfred Russel Wallace. In it, Darwin found that the young man had reached the same conclusions about evolution that he had been working to prove for the previous two decades.

  • Why Darwin Matters
    Why Darwin Matters
    Duration: 15min | 29/09/2014

    Over the last 150 plus years there is one subject which has caused its advocates and detractors to butt heads, often with incredulity at their opponents stance, and sometimes with animosity. That subject of course is evolution by natural selection. But what does it mean?

  • On the Origin of Species
    On the Origin of Species
    Duration: 18min | 22/09/2014

    On November 24, 1859, "On the Origin of Species" was published. To say that it made a splash would be an understatement. It changed the world.

  • Darwin: The Calm Before the Storm
    Darwin: The Calm Before the Storm
    Duration: 12min | 15/09/2014

    In the years following his return from his voyage on the Beagle, Charles settled into a life as a naturalist. On all fronts, both personal and professional, things were looking up for Charles. His days were spent pouring over his notes and the specimens he had collected from his five year voyage. He would take long walks to gather his thoughts and rarely left Down House unless he had to attend a meeting. He wasn't in any rush to publish his book however. He knew that a possible backlash was in store for him when he did. Whether he liked it or not, his views were about to find themselves on the world's stage.

  • Darwin On The HMS Beagle
    Darwin On The HMS Beagle
    Duration: 13min | 08/09/2014

    Charles Darwin, at 22, had never sailed before. With his notebooks, gear, rifles, and trunks loaded, he stood on the deck of the HMS Beagle to bid England farewell. The date was 12/27/1831.

  • Darwin Before the Beagle
    Darwin Before the Beagle
    Duration: 15min | 03/09/2014

    Charles Darwin will be forever known as the man who came up with the brilliant, and magnificent, idea that life evolved on this planet from a common ancestor and that the driver, or the mechanism behind this, is natural selection.

  • Introducing Evolution Talk!
    Introducing Evolution Talk!
    Duration: 05min | 31/08/2014

    If you've ever wondered what all of the fuss was about, or how evolution works, then you've come to the right place. Over the next few weeks, months, and years, we will look at Darwin's revolutionary theory and what it means to the life we see around us.

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