In 2015,a spelunker named Joachim Kreiselmaier discovered a troglobite, a species that lives in underground environments, in the Danube-Aach cave system in South Germany. This small, pale fish had an elongated body, large nostrils, and minuscule, non-functional eyes. It was the first species of cave fish found in Europe and was related to loaches from the nearby Danube River. These cave fish lost their eyesight and pigmentation not because they stopped needing them, but due to evolution by natural selection. 

Evolution Talk is also a book! You can find links to Amazon, Barnes & Noble and others on the front page of EvolutionTalk.com, or call your local bookstore and ask them to order a copy.

On September 15, 1835, the Galapagos Islands welcomed the arrival of a ship that had traversed South America, offering a strikingly different landscape. The vessel, HMS Beagle, still had just over a year before it would return to England. Aboard the ship was a young naturalist named Charles Darwin, who was unaware that his brief five-week exploration of the Galapagos Archipelago would ultimately inspire him to pen a world-altering book. This work would revolutionize our comprehension of the origins and diversity of the countless species that have existed and continue to exist on Earth.

Evolution Talk is also a book! You can find links to Amazon, Barnes & Noble and others on the front page of EvolutionTalk.com, or call your local bookstore and ask them to order a copy.

It can be straightforward to confuse facts and theories, but they remain distinct entities. Asserting that evolutoion by natural selection is not a fact does not diminish its significance as a theoretical framework. The theory is founded on empirical evidence and provides a deeper understanding of the subject matter.  Scientific theories evolve over time as new evidence and discoveries emerge. They continue to be refined and expanded as our knowledge of the natural world grows.

Evolution Talk is also a book! You can find links to Amazon, Barnes & Noble and others on the front page of EvolutionTalk.com, or call your local bookstore and ask them to order a copy.

Our diet has a direct impact on our quality of life, and this fact is not new. Throughout the evolution of our species, food availability and our diet have been influential factors. The Hominin River has provided insights into the dietary habits of our predecessors and how it affected their brain size and ability to walk on two legs. The transition from herbivores to omnivores, as well as learning how to cook food, caused a reduction in teeth size and gut size. Despite not documenting their meals or counting calories, our ancient hominin ancestors were keen on experimenting with what they ate. Their primary concern was avoiding predators, so we rely on archaeological findings to understand their diet.

Evolution Talk is also a book! You can find links to Amazon, Barnes & Noble and others on the front page of EvolutionTalk.com, or call your local bookstore and ask them to order a copy.

Our journey down the Hominin River in search of our ancestors and the evolution of our species has been extensive. Homo sapiens began exploring the world 300,000 years ago, and anatomically modern humans appeared 200,000 years ago. We, also known as Homosapiens sapiens, are the last surviving species of the Hominin family. However, as we speed along the river, we may overlook a significant change - the river is now narrower, with its tributaries gone. This river, which has been around for over 6 million years, may be nearing its end sooner than we anticipate. With millions of years behind us, we might only have a few centuries left to navigate.

Evolution Talk is also a book! You can find links to Amazon, Barnes & Noble and others on the front page of EvolutionTalk.com, or call your local bookstore and ask them to order a copy.

Music in this Episode

• Denouement by Podington Bear, License (CC BY 3.0): Artist website: soundofpicture.com

• Ghost by Podington Bear, License (CC BY 3.0): Artist website: soundofpicture.com

• Human Survivor by Podington Bear, License (CC BY 3.0): Artist website: soundofpicture.com

The discovery of a Homo erectus skull in 2005, known as Skull 5, marked a significant archaeological find. Among the five skulls found, estimated to be approximately 1.8 million years old, Skull 5 stands out as the most complete hominin skull ever uncovered. Remarkably, it had remained hidden within a cave for nearly two million years before its discovery.

Evolution Talk is also a book! You can find links to Amazon, Barnes & Noble and others on the front page of EvolutionTalk.com, or call your local bookstore and ask them to order a copy.

Music in this Episode

• River Fire by Kevin MacLeod, Free download: https://filmmusic.io/song/4294-river-fire, License (CC BY 4.0): https://filmmusic.io/standard-license

• Slow Heat by Kevin MacLeod, Free download: https://filmmusic.io/song/4373-slow-heat, License (CC BY 4.0): https://filmmusic.io/standard-license

• Allada by Kevin MacLeod, Free download: https://filmmusic.io/song/4981-allada, License (CC BY 4.0): https://filmmusic.io/standard-license

• Rite of Passage by Kevin MacLeod, Free download: https://filmmusic.io/song/4291-rite-of-passage, License (CC BY 4.0): https://filmmusic.io/standard-license

In 1959, a significant event took place when teeth were discovered at Olduvai Gorge in Tanzania. These teeth were identified as belonging to a hominin species known as Homo habilis, which for decades held a special place as the first hominin to be given the title of Homo and considered as our earliest Homo ancestor. However, as more evidence and research emerge, the question arises: is Homo habilis truly the first Homo species, or is there more to the story?

Evolution Talk is also a book! You can find links to Amazon, Barnes & Noble and others on the front page of EvolutionTalk.com, or call your local bookstore and ask them to order a copy.

Music in this Episode

• Infados by Kevin MacLeod. Free download: https://filmmusic.io/song/3914-infados, License (CC BY 4.0): https://filmmusic.io/standard-license

• Artifact by Kevin MacLeod, Free download: https://filmmusic.io/song/3382-artifact, License (CC BY 4.0): https://filmmusic.io/standard-license

• Accralate by Kevin MacLeod, Free download: https://filmmusic.io/song/3336-accralate, License (CC BY 4.0): https://filmmusic.io/standard-license

• Drums of the Deep by Kevin MacLeod, Free download: https://filmmusic.io/song/3681-drums-of-the-deep, License (CC BY 4.0): https://filmmusic.io/standard-license

Thomas Plummer, an archaeologist, had received information about the discovery of stone tools on the Homa Peninsula hillsides in Kenya. In an attempt to gain more knowledge, he initiated an excavation. However, instead of discovering more stone tools, he and his team came across numerous fossils of various animals such as crocodiles, antelopes, horses, and hippos. The fossils were accompanied by stone tools. But who made them?

Evolution Talk is also a book! You can find links to Amazon, Barnes & Noble and others on the front page of EvolutionTalk.com, or call your local bookstore and ask them to order a copy.

For show notes and more, please visit https://EvolutionTalk.com

Music:

• Criminals (DECISION) by Sascha Ende, Free download: https://filmmusic.io/song/248-criminals-decision, License (CC BY 4.0): https://filmmusic.io/standard-license
• Lurking Sloth by Alexander Nakarada, Free download: https://filmmusic.io/song/4785-lurking-sloth, License (CC BY 4.0): https://filmmusic.io/standard-license
• Until Then My Friend by Euan Ford, Free download: https://filmmusic.io/song/8692-until-then-my-friend, License (CC BY 4.0): https://filmmusic.io/standard-license
• Blockbuster Atmosphere 5 (African Spirit) by Sascha Ende, Free download: https://filmmusic.io/song/133-blockbuster-atmosphere-5-african-spirit, License (CC BY 4.0): https://filmmusic.io/standard-license

We’ve come quite a long way along the Hominin River.  We’ve passed tributaries and navigated some pretty large bends.  On the way we’ve heard rumors about what was ahead.  A name actually.  You’ll recognize her name because she's been mentioned on this show more than once.  She’s perhaps the most famous ancestor(?) of all.

Evolution Talk is also a book! You can find links to Amazon, Barnes & Noble and others on the front page of EvolutionTalk.com, or call your local bookstore and ask them to order a copy.

For show notes and more, please visit https://EvolutionTalk.com

Music in this Episode:

• Ghost by Podington Bear, License (CC BY 3.0): Artist website: soundofpicture.com

• Pythagoras by Podington Bear, License (CC BY 3.0): Artist website: soundofpicture.com

• Gentle Chase by Podington Bear, License (CC BY 3.0): Artist website: soundofpicture.com

• Twine by Podington Bear, License (CC BY 3.0): Artist website: soundofpicture.com

• Clay by Podington Bear, License (CC BY 3.0): Artist website: soundofpicture.com

Between 1992 and 1994, working in the Awash region of Ethiopia, the same region that Ardipithecus kadabba would be found a few years later, paleoanthropologist Tim White unearthed well over 100 specimens of something new.  

What was it?

Evolution Talk is also a book! You can find links to Amazon, Barnes & Noble and others on the front page of EvolutionTalk.com, or call your local bookstore and ask them to order a copy.

For show notes and more, please visit https://EvolutionTalk.com

Music:

• Caravan by Podington Bear, License (CC BY 3.0): Artist website: soundofpicture.com

• Bit Rio by Podington Bear, License (CC BY 3.0): Artist website: soundofpicture.com

• Gamma Ray by Podington Bear, License (CC BY 3.0): Artist website: soundofpicture.com

• Climbing the Mountain by Podington Bear, License (CC BY 3.0): Artist website: soundofpicture.com

• Toboggan (Smooth Run) by Podington Bear, License (CC BY 3.0): Artist website: soundofpicture.com