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Scandium is a chemical element with the symbol Sc and atomic number 21. A silvery-white metallic d-block element, it has historically been classified as a rare-earth element.
(Source: Library Lyna)
Mining traditionally has destroyed vegetation and topsoil as it takes minerals from the ground. New techniques and increased environmental awareness has recently led to new land reclamation experiments. Adding earthworms and bacteria to restore the land is one such venture. Highlights bioremediation--using living organisms-- to clean up heavy metals left as mining residue.
Join host Joel Greene as he explores how batteries can be recycled. The crew visits a battery recycling plant and helps sort the different types of batteries. Part of the Curiosity Quest Series.
Plastic is found in almost everything produced and takes up considerable space in landfills. Its improper disposal can lead to environmental damage as well as pose a risk to people’s health. However, the key to keeping people and the environment safe lies in reducing, recycling, and reusing.
Cosmetics are big business. They are used by almost every person walking on the Earth. Shows how cosmetics are made and how they have been used for thousands of years. Outlines bases, bulking agents, coloring agents, fragrances, and preservatives. Demonstrates the making of an emulsion and explains the processes of distillation or solvent extraction.
Part of the "Green Careers" series. Visits a naval air station where a team from the Environmental Protection Agency manages a massive program to remove a half-century of hazardous waste. Profiles such jobs as hazardous-waste technician, chemist, toxicologist, and EPA project manager. Jobs profiled include the following: project manager, technical manager, safety officer, chemist, and scientist.
Provides step-by-step instructions on how to grow a variety of plants in containers. Includes the following topics: varieties of containers (available for purchase); how to make your own container; container selection and preparation; soil preparation; choosing plant varieties; bringing it all together: examples of assembled containers; and care and maintenance of plants.
Did you know Oregon crab fishers lose their pots because they often encounter high winds and waves up to 40 feet? Join Joel on this adventurous quest as he boards a vessel to sail the Oregon coast in search of crab pots in an effort to help clean up the ocean. Part of the Curiosity Quest Series.
It’s a freezing cold day inside the National Ice Core Laboratory (NICL) in Denver, Colorado. That’s because the NICL is a facility for storing and studying ice cores recovered from the polar regions of the world. And, saws are buzzing, as scientists from all over the U.S. are measuring and cutting pieces of precious Antarctic glacier ice to take back to their labs for research. Part of the National Science Foundation Series “Science Nation.”
When Geologist Jeff Donnelly of the Woods Hole Oceanographic Institution (WHOI) hunts for hurricanes, he does it safely at ground level, or just slightly below. He is even able to do it without having to encounter so much as a drop of rain or a gust of wind. With funding from the National Science Foundation, Donnelly leads a team that studies long term global hurricane patterns. They’ve unearthed some interesting findings about past hurricane activity which might provide a hint about what to expect in the future.
Travels to over a dozen locations exploring the state of global fisheries. Explores the consequences in the Indian Ocean of nets with mesh so fine that even seawater only trickles out, the potential extinction of tuna in the Mediterranean and the North Atlantic, and the impact of land-based sources of pollution on coastal fishing areas. Part two of this series reports on the search for solutions.
What would you think of powering a car using a water fuel cell, a home furnace powered by permanent magnets, or a self-driven electromagnetic engine with enough power to put a spacecraft into orbit? This is all energy that humans wouldn't have to pay for and that wouldn't pollute the earth. Not only would free energy change the world, but it would end human dependence on having to use so much of the world's fossil fuels.
Monitoring water quality is vital to make sure dangerous bacteria doesn't creep into drinking water or overcome sewage treatment plants. With support from the National Science Foundation, engineers at the Monterey Bay Aquarium Research Institute have developed the Environment Sample Processor (ESP), a "DNA lab in a can." The size of a trash can, it can be placed in the open ocean or at water treatment facilities to identify potentially harmful bacteria, algae, larvae, and other microscopic organisms in the surrounding waters. It can monitor and send results back to the lab in real time to monitor water quality. Now, the engineers are modifying the ESP so it can go mobile, working from an autonomous underwater vehicle (AUV).
Microorganisms affect everyone. Some are helpful, while others are harmful. Explores pathogenic microorganisms that can cause diseases like sore throats, influenza, tuberculosis, and HIV; decomposer microorganisms that decay rotting plant and animal matter, returning important nutrients back into the soil; and microorganisms that are also being used in the fuel industry to develop new nonpetroleum based products. Overviews food spoilage microorganisms such as mold that can ruin stored food. Explains other bacteria and yeasts are vital to the production of food and drinks like yogurt and bread, along with beer and wine. Examines where they come from and some examples of positive uses relating to many foods we eat.
As shown on the History Channel. Four and a half billion years ago, the Earth formed from dust in space to become a molten ball of rock orbiting the Sun. Travels back in time to investigate how the fledgling planet survived a cataclysmic cosmic collision with another world, how molten rock solidified to land, how our oceans filled with water, and how life arrived on Earth. Geologists study the oldest rocks on Earth and meteorites from outer space to solve the geological mystery of all--the birth of the Earth.
In this segment, students learn all about different types of energy found on Earth. Solar energy comes from the sun, and geothermal energy is generated and stored in the earth. Students also discuss these forms of energy and how the energy of the earth transfers heat through the convection process. Part of the "Earth Science" series.
As shown on the History Channel. In the remote wastes of Siberia buried under snow are the remains of one of the greatest catastrophes that the Earth has endured. 250 million years ago, huge volumes of lava spewed out onto the surface--so much that it would have buried the whole of Texas under one mile of lava. At first the temperature dipped but then the greenhouse gases that escaped from the depressurized lava caused a massive global warming. It wreaked havoc, and 95% of the species on Earth became extinct. Yet life hung on and in time this disaster paved the way for the next phase of life on earth--the age of the dinosaurs.
How did the universe form? Where did it come from? Where does Earth fit into the equation? This segment focuses on Earth's place in the universe. Other topics covered include the solar system, gravity, planetary experience, and stars. Part of the "Earth Science" series.
Human actions can have positive and negative impacts on Earth. Students will learn ways to make sure they help preserve the Earth.
Part of the Project-Based Inquiry Science "Earth Science Content Videos" series. Modules include the following: "Mantle Simulation: Hot Water in Cup," "Mantle Simulation: Cold Water in Cup," "Mantle Simulation: Cardboard," and "Plate Interaction Animations."
Showing collections 1 to 5 of 5
3D models and images of the entire periodic table of elements
A collection containing 118 resources, curated by Library Lyna
A collection of Chemistry related resources
A collection containing 67 resources, curated by Benetech
Resources to teach younger students about animals
A collection containing 58 resources, curated by DIAGRAM Center
Biology related concepts
A collection containing 59 resources, curated by Benetech
A collection of simulations from PhET.
A collection containing 15 resources, curated by Charles LaPierre