Scott Solomon
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An evolutionary biologist provides surprising insights into the changing nature of Homo sapiens in this "important and an entertaining read" (Choice).
In Future Humans, evolutionary biologist Scott Solomon draws on recent discoveries to examine the future evolution of our species. Combining knowledge of our past with current trends, Solomon offers convincing evidence that evolutionary forces are still affecting us today. But how will modernization-including...
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Charles Darwin's remarkable On the Origin of Species was a groundbreaking work that fundamentally altered how scientists approached the study of life itself. However, since its publication in 1859, the modern science of biology and genetics has added surprising new dimensions to evolutionary theory. In this course you'll discover what Darwin didn't know in 24 lectures delivered by Professor Scott Solomon of Rice University. Assuming no background...
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In many ways, insects are just like us. Elaborate mating rituals, a variety of parenting styles, and a plethora of careers-from architects and engineers, to farmers and ranchers. Like us, they're able to share complex information essential for survival, significantly impact their environment, and recycle. But insects outdo us in so many respects. They are terrestrial, but some can live underwater. Their six legs are great for walking or running, but...
4) What Darwin Didn't Know: The Modern Science of Evolution: Evolution Doesn't Repeat, but It Rhymes
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Convergent evolution occurs when natural selection causes different species to evolve in similar ways. Does this mean that evolution follows a predetermined path? Focus on the recent debate between scientists Stephen Jay Gould and Simon Conway Morris. Gould perceived contingencies and unpredictability, but Conway Morris saw repetition and consistency. How do these views relate to human evolution?
5) What Darwin Didn't Know: The Modern Science of Evolution: Cambrian Explosion to Dinosaur Extinction
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Darwin was puzzled by the sudden appearance of complex, diverse flora and fauna in the fossil record roughly 540 million years ago, a period known as the Cambrian explosion. And Darwin had no idea that the history of life on Earth has included five big mass extinction events followed by accelerated periods of evolution that often took life in radically new directions.
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What does the future hold? Will we evolve into new species? Or have we reached an optimum state that will see minimal evolutionary changes? Weigh the impact of our ever-more-sophisticated technology and consider what will happen to humans who leave Earth for another planet with new physiological challenges. As you learn in this course, evolution isn't just possible; it's inevitable.
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While some insects are herbivores and others are predators, a third group gets their energy and nutrients as parasites and parasitoids. Grisly though it might sound to us, you'll discover that some insects inject their eggs into the bodies of insects and other animals, and some even insert their eggs into others' eggs. Sometimes the hosts live through this process, but sometimes they do not.
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Explore the many fascinating pairings in the coevolutionary dance between plants and insects. Step by step over millions of years, both insects and plants have developed ways to meet their own needs while increasing their value to their partners. No insects have done this better than the ants.
9) What Darwin Didn't Know: The Modern Science of Evolution: Coevolution: Peace Accords and Arms Races
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Darwin saw that natural selection not only leads to species that evolve to their mutual advantage, but to enemies that wage an evolutionary arms race that ends up benefiting both sides. Study coevolutionary cases - from the yucca plant and its symbiotic partner, the yucca moth, to the fastest animal on Earth, the cheetah, and its prey the springbok antelope, which has evolved to be almost as fast.
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In Darwin's lifetime, comparisons between the brains of different species were restricted to examinations of anatomy alone. Today, researchers use genetic tools to gain deep insights into how behaviors and sensory abilities evolve. Study behavior in creatures from fire ants to crows to humans, asking how did human brains get so large - and why are big brains so useful anyway?
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You might never have eaten beetle larvae, locusts, ants, or termites, but chances are your ancestors did-just as many people do today. Explore the insect-rich diets of people around the world and learn why many scientists and dietitians believe insects just might be the food of our future.
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You might already have heard in the popular press about this disturbing trend: researchers have noticed that many insect populations are declining both in number and diversity. Although many animals have been affected by climate change and habitat loss, discover the human activities that have a disproportionate impact on insects-especially the use of pesticides.
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Insect pollinators contribute about $195 billion to the global economy, pollinating approximately 80% of the most important crops worldwide. Explore the complexities of these insects, the many types of pollination they perform, and the coevolutionary dance that continues today between these animals and their plants.
14) What Darwin Didn't Know: The Modern Science of Evolution: What Darwin Knew and Why It Still Matters
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Retrace Darwin's path to his theory of evolution by natural selection, which appeared in his masterpiece The Origin of Species, published in 1859. Encounter collector Alfred Russel Wallace's astonishing, almost identical, key insight. Detail the types of evidence, not known to Darwin, that have accumulated in the century and a half since his time, extending his ideas to a remarkable degree.
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Learn everything you need to know about starting an insect collection and making your own observations about your local environment. Discover how to start a collection of preserved insects using materials you probably already have at home. From nets to aspirators to pitfall traps, you'll have everything you need.
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Reveal what honeybees are really communicating with their waggle dance and why specific dances are used in specific circumstances. From waggle dances to pheromones, insects have developed unique efficiencies in their communication and actions, both at the individual and group level. Scientists have been taking notice-and mimicking the insects wherever possible.
17) What Darwin Didn't Know: The Modern Science of Evolution: Genetic Drift: When Evolution Is Random
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Explore how population bottlenecks and the founder effect lead to random changes in the frequency of genes, an independent mechanism of evolution known as genetic drift. Darwin had an inkling of this process when he proposed that "spontaneous variations" play a role in evolution. But genetic drift has proved far more significant than he ever envisioned.
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While the vast majority of insects pose no threat to humans, there are a few that compete with us for food, destroy our construction materials, and threaten both our natural and cultivated environments. Learn about the best and latest tools we can employ to control those insects, and why developing an understanding of the insect lifecycle is almost always a better investment than pesticides.
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Zoom in on the branch of the Tree of Life that gave rise to our species. Fossil discoveries and insights from DNA have led researchers to abandon the iconic image of a linear progression from hunched apes to upright humans. In its place is a much more intertwined tree for humans and their closest living and extinct relatives, including Neanderthals and the recently discovered Denisovans.
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Insects are the most significant herbivores worldwide. Along with the rise of the forests about 300 million years ago, insects evolved the ability to feed on and digest plants. Discover the diversity of strategies these animals have developed to feed on the many parts of plants-and how some have developed their own specialized microbiome to help them do the job.