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Learning to incorporate a variety of eco-friendly energy sources into businesses and homes will make Earth a better place to live. Students explore photovoltaics, the design behind wind turbine technology and the creative processes behind vehicles in the American Solar Car Race. Zero energy houses of the future will use many of these technologies to produce more energy than they consume. Renewable energy technologies are important for the future of our planet.
(Source: DCMP)
The Earth has many natural resources humans use every day. Students also investigate the difference between renewable and nonrenewable resources.
Geothermal energy is one of the oldest renewable resources used by humans. It has been used since the ancient Roman times as a heat source. Recently, it has been harnessed and used as a source of power. Explains a few different ways that geothermal power plants operate. Discusses how experts are working to fine-tune the process and make the power plants more affordable and useful across the country.
With today's high fuel costs, it is time to start looking beyond petroleum and into renewable resources to power vehicles. Ethanol is a clean-burning fuel derived from plants, primarily corn. It is combined with gasoline to produce a cleaner fuel that doesn't emit as many greenhouse gases as pure gasoline. Pure ethanol has not yet been approved to fuel vehicles, but it is the fuel of choice for racecars. By mixing gasoline with ethanol, fuel supply can be extended. Explores the production of ethanol and highlights the importance it holds in the "green power" movement.
From cleaning supplies to pharmaceuticals, surfactants are the compounds that make soap bubbly, paint spread smoothly, and medication dissolve more easily. Most surfactants are currently made from non-renewable petroleum sources and many of these surfactants don’t break down easily after they are discarded. Some can persist in the environment for decades. Their widespread use and environmental persistence has raised concerns about toxicity. At the University of Arizona, Jeanne Pemberton and her cross-disciplinary team work to create new “green” surfactants based on sugars that are generally known as glycolipids. With support from the National Science Foundation, Pemberton and her team are exploring the recent discovery of a versatile synthesis that allows production of many different types of glycolipids in large quantities. Some of these glycolipids are modeled after naturally occurring biosurfactants and some can be produced relatively inexpensively using renewable natural resources. Part of the National Science Foundation Series “Science Nation.”
People affect the environment in positive and negative ways. Discusses earth's renewable and nonrenewable natural resources. Highlights environmental areas of concern such as endangered species, resource conservation, pollution of air and water, the importance of recycling, and the danger of global warming. Emphasis is on human responsibility. Summary and quiz.
Clearly shows the environmental impacts of both renewable and nonrenewable energy sources. Provides an overview of numerous renewable energy sources, how the energy is collected, and the pros and cons of renewable energy. Also explores what is happening around the globe with the introduction of wind farms, wave parks, and solar farms.
University of Colorado engineer Abby Watrous is on a mission in rural China, converting coal-burning homes and cook stoves into cleaner-burning models. With funding from the National Science Foundation, this civil and environmental engineer is helping to develop renewable energy technologies in developing communities. Watrous and her colleagues are looking at ways to help more people use biomass.
What does it take to estimate how much water a large city will need 25 years into the future? The chief of urban water conservation for the state of California explains the challenges of supplying water to a growing population of millions, much of which lives in the desert.
There’s a new renewable energy player in town, and it’s about to make waves in the industry. Despite its massive potential as a source for renewable energy, the ocean is unlikely to contribute meaningfully to electricity supplies without dramatic, innovation-driven reductions in the cost of energy conversion. That’s where engineers Balky Nair, Rahul Shendure, and Tim Mundon come in with their company, Oscilla Power. With support from the National Science Foundation, they’re developing a utility-scale wave energy harvester called the Triton. This technology shows promise as a means for delivering utility-scale electric power to the grid at a price that is competitive with conventional fossil or renewable technologies. Part of the National Science Foundation Series “Science Nation.”
Students explore the important role the environment plays in everyday life. Several environmental problems are highlighted, with a focus on pollution and global warming. Additional concepts and terminology discussed include ecology, biological extinction, resource depletion, overconsumption of resources, fossil fuels, global climate change, and natural resources.
More energy from the sun hits the Earth in one hour than is consumed on the planet in a whole year. Caltech chemical engineer Sossina Haile and University of Minnesota mechanical engineer Jane Davidson are working to expand the nation’s renewable energy storage capacity. Their mission is to put the heat of the sun to work creating renewable fuels from sources that don’t need to be drilled out of the ground. Part of the National Science Foundation Series “Science Nation.”
Explains why Earth is precious and how it is being damaged. Special attention is paid to how individuals can conserve natural resources and care for the planet.
Divers in Florida explore a labyrinth of treacherous caves as they attempt to map the state’s freshwater resources. Segment of video from Wild Chronicles Series.
Describes human activities' effects on earth. Examines how humans, industrialization, and technologies impact the environment, water cycle, and land use. Encourages better planning and management of resources.
What happens to waste after it is discarded? Treating discarded waste consumes many resources and hours of man power. A walk through the facilities of CEAMSE reveals what happens to discarded items and the residue they leave behind.
New attention is being paid to the benefits of not only recycling materials, but also on increasing efforts to reduce excessive consumption of natural resources. Communities are beginning to see the benefits of recycling, reducing, and reusing.
Environmental scientist Tamar Losleben explains how environmental engineers research and plan the best ways to use resources to satisfy both human and environmental needs.
Host award-winning geoscientist, Richard Alley provides an eye-opening look at some of the world’s most important energy decisions, and an assessment of what it takes to build a sustainable energy infrastructure. Part 2 of Earth: The Operators’ Manual.
Latonia Kirksey serves as a senior human resources specialist in the HR Services Division at the NASA Shared Services Center. She provides oversight for several programs, and she is also the technical expert and spokesperson for guidance and policy interpretation. Part of the "Women@NASA" series.
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