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Though tool use is not unique to humans, their sophistication and degree of reliance upon them is unique, and sets humans apart from other species. So when did human tool-making begin, and why? And what does the use of tools reveal about the evolution of human ancestors? Paleoanthropologist Tim White reveals the answers in this short video.
(Source: DCMP)
In this episode, Bill Stanley, Director of the Gantz Family Collections Center, tells host Emily Graslie all about the hero shrew, with particular focus on the evolution of the development of its spine. He also discusses the discovery of a new species of hero shrew found in Africa. Part of "The Brain Scoop" series.
The evolution of the arms, legs, necks, and lungs of the human body can be traced to a fish that lumbered onto land some 375 million years ago. The genetic legacy of this creature can be seen today in human DNA, including the genes used to build hands and limbs. Part of the “Your Inner Fish” series. Please note this title shows corpses in anatomy labs and contains mature themes.
Part of the "Branches on the Tree of Life" series. Echinoderms are one branch of the deuterostome line of animal evolution, the branch to which Chordates also belong. Covers phylum characteristics and key biological details for five classes: sea stars, brittle stars and basket stars, sea urchins and sand dollars (including developmental stages), sea cucumbers, and crinoids (feather stars).
Diaphonization, otherwise known as clearing and staining, is one of the most photogenic preparation methods used by research scientists. It's beautiful, but is it practical? Host Emily Graslie interviews Dr. Caleb McMahan, Collection Manager of Fishes, on how he uses this technique to answer questions about the evolution of fish. Part of "The Brain Scoop" series.
Charles Darwin’s father wants him to be a pastor, but Darwin has a passion for science. At the encouraging of his uncle, he boards a Royal Navy ship known as the HMS Beagle. The voyage lasts for five years, and Darwin’s discoveries will revolutionize science. During the voyage, he spends most of his time on land performing methodical observations, which lead to his theories on evolution and natural selection. Part of the “Butterfly Effect” series.
From fossil evidence, it appears that life may have existed on Earth as early as 3.5 billion years ago. This suggests that life must have evolved sometime during Earth's tumultuous first billion years. How did life evolve? What did early forms of life look like? Topics covered include protocells, endosymbiosis, prokaryotes, eukaryotes, evolution, heredity, variation, natural selection, genetic drift, and gene flow. Part of the "Biology" series.
Part of the "Branches on the Tree of Life" series. The term "protist" covers a wide range of microscopic organisms formerly clumped into "Kingdom Protista." New molecular analyses show that the protistan lines of evolution go so far back in time they can be considered as different kingdoms of life. Through photography of living protists, amoebas, flagellates, algae, and the elegant ciliated protists are introduced in ten learning modules.
Natural selection is a process which affects every species on Earth, including humans. Illustrates how it continues to affect humans all in fundamental ways that will determine the future survival as the species. Includes a brief explanation of natural selection, examples of how it is operating all around humans, how it has affected human evolution, and how it is still affecting daily lives. Concludes with the reciprocal view of how modern human society is affecting the processes in the environment, and the consequences for the future of life on Earth.
When pterosaurs first took flight, it may have marked the beginning of the end for the winged reptiles. Some evidence gathered suggests that the power of flight led to evolutionary changes in the reptiles, which may have ultimately led to their downfall. Part of the "Eons" series.
Paleo-anthropologists believe Homo sapiens evolved in Africa 100-200 thousand years ago, and eventually moved out of Africa to populate the globe. But, how can researchers trace the specifics of that human migration? With support from the National Science Foundation, Florida Museum of Natural History Mammologist David Reed has undertaken a novel approach. He studies the genetic diversity and evolution of the human parasite that hitched a ride the whole way: lice.
In 1928, a physician named Alexander Fleming observed that a mold in one of his Petri dishes was killing the bacteria he was trying to grow. This strain of mold led to one of the most significant medical discoveries in history: the antibiotic penicillin. Antibiotics soon became lifesavers. However, even back then, Fleming knew that bacteria could become resistant to penicillin. This video describes how widespread use of antibiotics in medicine, agriculture, and household products can lead to the evolution of microbes that are resistant to multiple antibiotics. Part of the "I Contain Multitudes" series.
In some parts of the world, there is an intimate connection between the infectious parasitic disease "malaria" and the genetic disease "sickle-cell anemia." A keenly observant young man named Tony Allison, working in East Africa in the 1950s, first noticed the connection and assembled the pieces of the puzzle. His story stands as the first and one of the best understood examples of natural selection, where the selective agent, adaptive mutation, and molecule involved are known-and this is in humans to boot. The protection against malaria by the sickle-cell mutation shows how evolution does not necessarily result in the best solution imaginable but proceeds by whatever means are available.
Human beings, like every living organism, are driven by two inherent needs: to survive, and ultimately, to reproduce. To accomplish the goals of survival and reproduction, we have inherited bodies crafted by evolution so that every individual human organism is an organic super factory, a living machine made up of systems that process fuel, build products, repair damage, expel waste, and defend against invaders. Introduces the complex physiological systems of the human body: muscular movement, digestion, circulation, respiration, nerves, glands, immunity, and reproduction. Also, illustrates and explains the cellular basis of life and the importance of carbon in organic chemistry.
A key moment in the evolutionary saga occurred 200 million years ago, when the ferocious reptile-like animals that roamed the Earth were in the process of evolving into shrew-like mammals. But these reptilian ancestors left their mark on many parts of the human body, including skin, teeth and ears. Part of the “Your Inner Fish” series.
In some parts of the world, there is an intimate connection between the infectious parasitic disease "malaria" and the genetic disease "sickle-cell anemia." A keenly observant young man named Tony Allison, working in East Africa in the 1950s, first noticed the connection and assembled the pieces of the puzzle. His story stands as the first and one of the best understood examples of natural selection, where the selective agent, adaptive mutation, and molecule involved are known--and this is in humans to boot. The protection against malaria by the sickle-cell mutation shows how evolution does not necessarily result in the best solution imaginable but proceeds by whatever means are available.
Part of the "Branches on the Tree of Life" series. Explores the structure, life cycles, ecology, classification, and evolutionary relationships of four major lines of fungi: Chytrids, Zygomycetes (various molds), Ascomycetes (yeasts, cup fungi, and most lichens), and Basidiomycetes (rusts and mushrooms). Emphasizes adaptations and reproductive mechanisms.
The rock pocket mouse is a living example of Darwin’s process of natural selection. Not only is evolution happening right now everywhere around us, but adaptive changes can occur in a population with remarkable speed. This speed is essential if you’re a desert mouse living in an environment where a volcanic eruption can reverse selective pressure in nearly an instant. The film features Dr. Michael Nachman, whose work in the field and in the lab has quantified the selective pressure of predators and identified the genes involved in adaptation. In a complete story, from ecosystem to molecules, pocket mice show us how random changes in the genome can take many paths to the same adaptation—a colored coat that hides them from predators.
Part of the "Branches on the Tree of Life" series. Phylum Arthropoda is the most luxuriant branch on the tree of life. Covers phylum characteristics and three major arthropod classes: Crustaceans (copepods, waterfleas, branchiopods, decapods, and barnacles), Chelicerates (scorpions, pseudoscorpions, spiders, ticks, and mites), and Uniramians (centipedes, millipedes, and insects). Focuses on adaptations, life cycles, and evolutionary relationships in each section.
The rock pocket mouse is a living example of Darwin's process of natural selection. Not only is evolution happening right now everywhere around us, but adaptive changes can occur in a population with remarkable speed. This speed is essential if you're a desert mouse living in an environment where a volcanic eruption can reverse selective pressure in nearly an instant. Features Dr. Michael Nachman, whose work in the field and in the lab has quantified the selective pressure of predators and identified the genes involved in adaptation. From ecosystem to molecules, pocket mice show the viewers how random changes in the genome can take many paths to the same adaptation-a colored coat that hides them from predators.
Showing collections 1 to 2 of 2
Biology related concepts
A collection containing 59 resources, curated by Benetech
Resources to teach younger students about animals
A collection containing 58 resources, curated by DIAGRAM Center
