Acerca de este curso: How did life emerge on Earth? How have life and Earth co-evolved through geological time? Is life elsewhere in the universe? Take a look through the 4-billion-year history of life on Earth through the lens of the modern Tree of Life! This course will evaluate the entire history of life on Earth within the context of our cutting-edge understanding of the Tree of Life. This includes the pioneering work of Professor Carl Woese on the University of Illinois Urbana-Champaign campus which revolutionized our understanding with a new "Tree of Life." Other themes include: -Reconnaissance of ancient primordial life before the first cell evolved -The entire ~4-billion-year development of single- and multi-celled life through the lens of the Tree of Life -The influence of Earth system processes (meteor impacts, volcanoes, ice sheets) on shaping and structuring the Tree of Life This synthesis emphasizes the universality of the emergence of life as a prelude for the search for extraterrestrial life.
Para quién es esta clase: No specific background is required. You do need an open mind and an eagerness to apply critical free thought and approaches of scientific inquiry. This will enable you to explore how life on Earth came to be in its current form and whether there is life elsewhere in the cosmos.
Creada por: University of Illinois at Urbana-Champaign
Enseñado por: Bruce W. Fouke, Ph.D., Director of the Roy J. Carver Biotechnology Center
Department of Geology, Department of Microbiology, and Institute for Genomic Biology
| Nivel | Beginner |
| Compromiso | 8 weeks of study; 4-6 hours/week |
| Idioma | English |
| Cómo aprobar | Aprueba todas las tareas calificadas para completar el curso. |
| Calificaciones del usuario |
Programa
SEMANA 1
Orientation
In this module, you will become familiar with the course, your instructor, your classmates, and our learning environment.
2 videos, 8 lecturas
- Материал для самостоятельного изучения: Welcome to Emergence of Life!
- Материал для самостоятельного изучения: Syllabus
- Материал для самостоятельного изучения: Updating Your Profile
- Материал для самостоятельного изучения: Social Media
- Материал для самостоятельного изучения: About the Discussion Forums
- Материал для самостоятельного изучения: How Graded Discussions Work
- Материал для самостоятельного изучения: Discussion Rubric
- Материал для самостоятельного изучения: Paper Assignment Rubric
- Vídeo: Welcome to the Emergence of Life!
Calificado: Orientation Quiz
Week 1 - Geological Time and the Nature of Science
The week begins with a discussion of the historical and philosophical approaches that have been developed for the completion of scientific research, with the work of Professor Carl Woese evaluated as an example. The basic tools required for this type of scientific reasoning and the ability to overcome the challenging concepts of scale and complexity are then presented. Finally, we'll explore the dynamic formation of the Earth itself with respect to the environmental conditions present on the earliest and most ancient version of planet Earth.
9 videos, 1 lectura
- Материал для самостоятельного изучения: Week 1 Overview
- Vídeo: 1.2. Philosophical Benchmarks in Science
- Vídeo: 1.3. Scientific Inquiry vs Scientific Method
- Vídeo: 1.4. The Scale of Time and Space: Powers of Ten
- Vídeo: 1.5. NASA’s Greeting Card to Aliens: The Golden Record
- Vídeo: 1.6. Deep Geological Time
- Vídeo: 1.7. The Structure of the Solar System
- Vídeo: 1.8. Birth of the Earth
- Vídeo: 1.9. The Perfect Storm: A Recipe for Life
- Вопрос для обсуждения: Week 1 Discussion
Calificado: Week 1 Quiz A
Calificado: Week 1 Quiz B
SEMANA 2
Week 2 - The Tree of Life and Early Earth Environments
The advent of life on Earth came about as a result of a remarkable confluence of physical, chemical, and biological processes, all of which were intrinsically linked to rapidly changing early Earth environments. Within this context, cutting-edge approaches in molecular phylogeny by Professor Carl Woese revealed new understandings of the emergence of life and the possible distribution of life within the cosmos. All this and more will be explored in this week's lessons!
10 videos, 3 lecturas
- Материал для самостоятельного изучения: Week 2 Overview
- Vídeo: 2.2. The Place of Carl Woese in Evolutionary Biology
- Vídeo: 2.3. Revolution of the Tree of Life
- Vídeo: 2.4. Evolution of the Tree of Life
- Vídeo: 2.5. How Did Life Emerge?
- Vídeo: 2.6. The Genetic Code and Evolutionary Theory
- Vídeo: 2.7. Throwing Rocks at Earth: The Martian Meteorite
- Vídeo: 2.8. Microbial Mats and Stromatolites: Laying Down On the Job
- Vídeo: 2.9. Oxygenation of the Atmosphere
- Vídeo: 2.10. Snowball Earth; It Did Freeze Over!
- Материал для самостоятельного изучения: Who Was Carl Woese?
- Вопрос для обсуждения: Week 2 Discussion
- Материал для самостоятельного изучения: Paper Assignment 1 Information
Calificado: Weeks 1-2 Discussion Samples
Calificado: Week 2 Quiz A
Calificado: Week 2 Quiz B
Calificado: Paper Assignment 1
SEMANA 3
Week 3 - Fossilization and Precambrian Life-Earth Interaction
This week, you'll explore how scientists interpret ancient fossilized life, which yields remarkably detailed and complete reconstructions of the lifestyles of ancient organisms that have been deceased for hundreds, thousands, millions, and even billions of years. These reconstructions provide valuable information regarding the evolutionary success of organism morphology and lifestyle.
7 videos, 1 lectura
- Материал для самостоятельного изучения: Week 3 Overview
- Vídeo: 3.2. Ancient Forensic Science: Fossilization
- Vídeo: 3.3. Getting Old and Well-Preserved: Modes of Preservation
- Vídeo: 3.4. Our Spineless Friends: The Invertebrates
- Vídeo: 3.5. Lifestyles of the Rich and Fossilized
- Vídeo: 3.6. Trying to Make a Living: Fossil Feeding Modes
- Vídeo: 3.7. The Great Experiment of the Ediacaran Fauna
- Вопрос для обсуждения: Week 3 Discussion
Calificado: Week 3 Discussion Samples
Calificado: Week 3 Quiz A
Calificado: Week 3 Quiz B
SEMANA 4
Week 4 - Paleozoic Life After the Advent of Skeletons
This week, you'll learn more about the Cambrian Explosion, which led to the development of external hard skeleton components at 542 million years before present. The initial successes of the invertebrates were shortly followed by the appearance of vertebrates with internal skeletons. Life then utilized these newfound evolutionary capabilities, beginning distinct cycles of radiation, diversification, and extinction, which define the three great Eukarya faunas of the Phanerozoic.
10 videos, 2 lecturas
- Материал для самостоятельного изучения: Week 4 Overview
- Vídeo: 4.2. Cambrian Explosion
- Vídeo: 4.3. Cambrian Fauna: Origin of Vertebrates
- Vídeo: 4.4. Burgess Shale Experiment
- Vídeo: 4.5. Invertebrates: Successes of Life Without a Backbone
- Vídeo: 4.6. Paleozoic Fauna
- Vídeo: 4.7. Vertebrates: Successes of Life With a Backbone
- Vídeo: 4.8. Evolution of Jaws and Perfecting Predation
- Vídeo: 4.9. Heavily Armored Fish Without Jaws
- Vídeo: 4.10. Fish Evolution: Hook, Line, and Sinker
- Вопрос для обсуждения: Week 4 Discussion
- Материал для самостоятельного изучения: Paper Assignment 2 Information
Calificado: Week 4 Discussion Samples
Calificado: Week 4 Quiz A
Calificado: Week 4 Quiz B
Calificado: Paper Assignment 2
SEMANA 5
Week 5 - Paleozoic Plants, Reptiles, and the Transition to Land
In the early Paleozoic, plants evolved to leave the water and invade the terrestrial landscape. Following this transition, vertebrates emerged into land-based ecosystems, and Carbon Dioxide concentrations increased in the atmosphere. The greenhouse warming of the Earth propelled the success of both prevascular and vascular plants, as well as the related terrestrial radiation of the three lineages of the reptiles. This week, you'll also learn about the Permian-Triassic mass extinction and later environmental changes that opened the door to the rise of the diapsids.
7 videos, 1 lectura
- Материал для самостоятельного изучения: Week 5 Overview
- Vídeo: 5.2. Early Prevascular Plants
- Vídeo: 5.3. Takeover of the Vascular Plants
- Vídeo: 5.4. Pennsylvanian Greenhouse Earth
- Vídeo: 5.5. Rise of the Reptiles
- Vídeo: 5.6. Reptiles Heating Up: Thermal Regulation
- Vídeo: 5.7. Diapsids and Synapsids: Ships Passing in the Night
- Вопрос для обсуждения: Week 5 Discussion
Calificado: Week 5 Discussion Samples
Calificado: Week 5 Quiz A
Calificado: Week 5 Quiz B
SEMANA 6
Week 6 - Mesozoic Reign of the Dinosaurs and the Development of Flight
This week, you'll learn more about the Permian-Triassic extinction event, which caused more than 80% of life to go extinct. This opened vast swaths of ecological opportunity for radiation and diversification of life during the Mesozoic. You'll learn about symbiosis, which was widely utilized during this period, as well as the fascinating lineage of diapsid reptiles that rose to replace the synapsid predators of the late Paleozoic. We'll also discuss the rise of the dinosaurs, as well as the catastrophic meteor impact that drove the dinosaurs to extinction.
8 videos, 2 lecturas
- Материал для самостоятельного изучения: Week 6 Overview
- Vídeo: 6.2. Rise of the Diapsids
- Vídeo: 6.3. Pterosaurs: The ONLY Flying Reptiles
- Vídeo: 6.4. Dinosaur Phylogeny: Hips Don't Lie
- Vídeo: 6.5. Evolution of Flight: Life Invades the Sky
- Vídeo: 6.6. Wild Wings: Fit to Fly
- Vídeo: 6.7. Cretaceous Warming on a Reorganized Earth
- Vídeo: 6.8. T. rex, and the Crater of Doom
- Вопрос для обсуждения: Week 6 Discussion
- Материал для самостоятельного изучения: Paper Assignment 3 Information
Calificado: Week 6 Discussion Samples
Calificado: Week 6 Quiz A
Calificado: Week 6 Quiz B
Calificado: Paper Assignment 3
SEMANA 7
Week 7 - Cenozoic Mammals and Global Environmental Change
With the demise of the dinosaurs, mammals rapidly radiated and diversified during the Cenozoic. The combination of abundant food sources and significant fluctuations in global climate fostered extreme variations in morphology, body size, and interaction with the environment. You'll learn why mammals had a distinct advantage over previous groups, and you'll also have the opportunity to explore multiple theories on primate and hominoid evolution in the context of global conditions during this period.
10 videos, 1 lectura
- Материал для самостоятельного изучения: Week 7 Overview
- Vídeo: 7.2. Mammals Conquer the Earth
- Vídeo: 7.3. Big is Beautiful
- Vídeo: 7.4. Sophistication of Mammal Skulls
- Vídeo: 7.5. Mammalian Dentition: My, What Big Teeth You Have!
- Vídeo: 7.6. Mammals: Taxonomy is in the Eye of the Beholder
- Vídeo: 7.7. Mammal-Marsupial Exchange: There Goes the Neighborhood
- Vídeo: 7.8. The Primates
- Vídeo: 7.9. The Rise of Humans: Getting a Leg Up on the Competition
- Vídeo: 7.10. Early Hominids: Trees versus Savannahs
- Вопрос для обсуждения: Week 7 Discussion
Calificado: Week 7 Discussion Samples
Calificado: Week 7 Quiz A
Calificado: Week 7 Quiz B
SEMANA 8
Week 8 - Astrobiology and the Search for Life in the Cosmos
No matter where you are or what you believe, sometime in your life you will look up into the sky and ask: What is out there? Where are we going? Is there life elsewhere in the universe?
This course is dedicated to searching for answers to these questions. The fundamental concepts of life and habitable environments, established upon the modern synthesis of the Tree of Life, will direct us in recognizing biospheres that might be quite different from our own. In the last week of this course, we will look in detail at what the future has in store for space exploration and the search for life in the cosmos.
11 videos, 1 lectura
- Материал для самостоятельного изучения: Week 8 Overview
- Vídeo: 8.2. NASA: A Platform for Inter-Disciplinary Science
- Vídeo: 8.3. Mars Flybys and Orbiters: Getting the Picture
- Vídeo: 8.4. Mars Rovers: Was the Red Planet Habitable?
- Vídeo: 8.5. NASA Future Missions
- Vídeo: 8.6. NASA Institute for Universal Biology
- Vídeo: 8.7. Think and Wonder…Wonder and Think
- Vídeo: 8.8. The Emergence of Life: Course Synthesis
- Vídeo: Emergence of Life Outtakes
- Вопрос для обсуждения: Week 8 Discussion
- Vídeo: Week 8 Quiz A Video 1: Curiosity Completes Its First Martian Year
- Vídeo: Week 8 Quiz A Video 2: One Year to Pluto
Calificado: Week 8 Quiz A
Calificado: Week 8 Quiz B
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