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Browse results: Biogeochemical Cycles

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RESOURCE	GRADE LEVEL	MEDIA TYPE
Acid Mine Drainage and Precipitates In this video, environmental scientists measure the pH of water to detect acid mine drainage from an abandoned coal mine and then demonstrate how metals present in acid drainage fall out of solution as precipitates when a basic substance is added to the water. Accessibility features: Caption	6-12	Video
Controlling Water Run-off This video shows how the environmentally friendly design of the Visitor Center at Bernheim Arboretum and Research Forest near Louisville slows down water run-off and helps to control non-point-source water pollution, conserve water, and prevent soil erosion Accessibility features: Caption	4-12	Video
Environmental Impact of Acid Mine Drainage This video shows how acid mine drainage from an abandoned coal mine has affected Wildcat Branch in Kentucky's Daniel Boone National Forest. Because the creek has a very acidic pH of 2.9, most organisms cannot survive there, and Wildcat Branch is essentially dead. Accessibility features: Caption	6-12	Video
Reusing Wastewater This video demonstrates how peat filtration beds at Bernheim Arboretum and Research Forest near Louisville, Kentucky purify and conserve wastewater and eliminate one cause of non-point-source water pollution. Accessibility features: Caption	4-12	Video
The Geology of Coal In this video, a geologist describes how coal, a sedimentary rock, was formed when organic materials piled up in swamps millions of years ago. Over time, heat and pressure transformed the buried materials into forms of coal that cause acid mine drainage when exposed to oxygen. Accessibility features: Caption	6-12	Video
High-Sulfur Coal and Acidic Water In this video, a geologist measures the pH of water after high-sulfur coal from a Kentucky coal mine has been added to it. This test demonstrates that the sulfate salts found on the coal’s surface cause the water to become much more acidic. Accessibility features: Caption	6-12	Video
Rain Gardens This video shows how a rain garden at Bernheim Arboretum and Research Forest near Louisville, Kentucky slows down the flow of water from the forest’s parking lot and helps prevent soil erosion. Accessibility features: Caption	4-12	Video
Mycoremediation This video explores the process of mycoremediation: planting fungi such as oyster mushrooms to mitigate non-point-source water pollution caused by oil, gasoline, and other toxic substances. Accessibility features: Caption	4-12	Video
Restoring Lower Rock Creek This brief video describes how Lower Rock Creek’s location between two National Wild and Scenic Rivers caused Kentucky environmentalists to choose the creek as a target for acid mine drainage remediation. Accessibility features: Caption	6-12	Video
Acid Mine Drainage Remediation In this video, an environmental technologist visits an abandoned coal mine in Kentucky to talk about how a remediation system (a series of settling ponds and treatment cells) is neutralizing the acid drainage flowing from the mine and keeping it from damaging a creek downstream. Accessibility features: Caption	6-12	Video
Applying the Scientific Method This video provides a real-life example of the scientific method: testing hypotheses about which plants will grow most successfully on a green roof in Kentucky. Accessibility features: Caption	4-12	Video
Results of Acid Mine Drainage Remediation In this video, a biologist visits Rock Creek in Pulaski County, Kentucky to show how acid mine drainage remediation has increased the stream’s pH from acidic levels to almost neutral. Although the ecosystem has not been completely restored, many species have returned to Rock Creek. Accessibility features: Caption	6-12	Video
Stream Restoration This video explores how Bernheim Arboretum and Research Forest near Louisville, Kentucky has restored a channelized or straightened stream to its original meandering path, thereby improving the stream’s water quality and creating a better habitat for wildlife. Accessibility features: Caption	4-12	Video
Aquatic Insects In this brief video, a biologist talks about the macroinvertebrates (typically aquatic insects) that form the basis of food webs in healthy Kentucky streams. Accessibility features: Caption	6-12	Video
Detached Wetlands This video depicts a detached wetland, a small pool that forms beside a shallow meandering stream when it overflows its banks. These wetlands are important breeding grounds for the invertebrates that live in and beside streams Accessibility features: Caption	4-12	Video
Cave Formation: Kane Cave This video segment adapted from NOVA describes a simple experiment that confirmed the idea that microbes can accelerate the biogeochemical process of cave formation. Accessibility features: Caption	6-12	Video
Caves: Extreme Conditions for Life This video segment adapted from NOVA raises the provocative idea that if life can exist in the most extreme environments on Earth — such as in dark, toxic caves — then perhaps living things can also survive in harsh environments on other planets. Accessibility features: Audio Description, Caption	6-12	Video
Earth as a System This visualization adapted from NASA maps progressive global changes onto a rotating globe. Earth's atmosphere, hydrosphere, geosphere, and biosphere are shown to be dynamic and interconnected. Accessibility features: Caption	6-12	Video
Health Risks of the BP Oil Spill In this video segment adapted from Need to Know, learn about the possible short- and long-term health risks for workers involved in cleaning up the BP oil spill in the Gulf of Mexico. Accessibility features: Caption	9-12	Video
Mass Extinction In this video segment adapted from NOVA scienceNOW, learn about a chain of events, including ancient volcanoes, global warming, and deadly gases, which may have caused Earth's greatest mass extinction 250 million years ago. Accessibility features: Caption	6-12	Video