12 resources and 2 collections matched your query.
Library of 3383 accessible STEM media resources.
Showing resources 1 to 12 of 12
Select a resource below to get more information and link to download this resource.
The Atlantic cod, staple food for centuries, has been overfished worldwide, and supply doesn't meet demand. After a brief look at the problem, viewers learn about "aqua farming" efforts in Scotland. Salmon and trout farming already exist there, and efforts are now being made to cooperatively develop cod farms. This British production explores the practicality, economics, and challenges of one answer to a food supply problem.
(Source: DCMP)
Part of the "Visualizing Cell Processes" series. Includes the following modules: "The Protein Nature of Life," "Protein Structure," "Transcription," "Translation and Protein Synthesis," "Gene Regulation in Prokaryotes," "Classes of Eukaryote DNA," "Exons and Introns," "Mutations," and "Renegade DNA: The Viruses."
A mutagen is any agent (physical, chemical, or biological) capable of altering the structure of DNA within human cells. This program explores how some mutations are a natural process resulting from errors in the copying and repair of DNA and how some mutagens naturally exist in the world (e.g., UV radiation, cosmic rays, and some radioactive isotopes). Others are specific chemicals that have been synthesized for use in manufacturing or other industries. Mutagens may also arise during the metabolism of certain foods. In many cases mutagens may also lead to the development of cancers.
A quick glance at the marsh next to Saquatucket Harbor in Harwich Port, Massachusetts, reveals right away that some of the grass is missing. The cordgrass there, and all around Cape Cod, has been slowly disappearing for decades. Marine ecologist Mark Bertness of Brown University studies this critical ecosystem, which protects our coastal environment by nurturing a complex web of plants and animals, filtering nutrients, and serving as a critical storm barrier. Bertness says the marshes are being overrun by purple marsh crabs because their main predators, blue crab and finfish, are being overfished. So, the purple marsh crabs are free to gorge on healthy fields of cordgrass and once done feeding, they leave behind nothing but lumpy fields of mud.
Qualcomm Thinkabit Lab engineer Saura Naderi teaches students how to make an LED light up and blink. Naderi demonstrates the basics of programming an Arduino board, as well as introduces coding and engineering vocabulary.
Part of the "Inside the Living Cell" series. Shows how DNA replicates; how copy errors occur and are subsequently corrected by repair enzymes; and how DNA is compressed into chromosomes, making mitosis and cell division possible. Provides an overview of DNA structure, replicating DNA, mutations that change the genetic code, proofreading and repair, and the stages of mitosis.
Unpredictable, stormy weather is a natural outcome of a warmer planet. As things heat, they become more volatile. From entire floating neighborhoods to massive harbor floodgates, cities around the world are trying to engineer their way to a safer future. Everything from farming to the insurance industry to building codes will have to change.
James Woodenlegs first learned to communicate using Plains Indians Sign Language from his family, growing up on the Northern Cheyenne Reservation in Montana. Also known as “hand talk,” the language has been used by both deaf and hearing Indians from Canada to the Gulf of Mexico for at least 200 years, possibly much longer. Woodenlegs is working with sign language scholars Jeffrey Davis and Melanie McKay-Cody to document and preserve hand talk, one of thousands of the world’s endangered languages.
Dr. Marian Diamond was a pioneering scientist and educator and considered one of the founders of modern neuroscience. At the University of California, Berkeley, she and her team were the first to publish evidence that the brain can change with experience and improve with enrichment, what is now called neuroplasticity. This documentary follows Dr. Diamond over a 5-year period and introduces the viewer to her many scientific accomplishments.
What if the source codes for the Internet had remained with the U.S. military rather than being released to the world? How did civilians gain unfettered access to the Internet? Three key events contributed to the development of this modern technology: the launch of Sputnik, the United States military conducts an ambitious project, and computer scientist Tim Berners-Lee invents the web and puts the very first Internet site on line. Part of the "Butterfly Effect" series.
As scientists discovered more and more chemical elements, they began developing systems to organize the elements by their chemical properties, leading to the modern periodic table. Through its organization, the periodic table makes clear the underlying chemical and physical trends among the elements. The periodic table is being continually updated even today as scientists strive to create new elements in laboratories. Part of the series Chemistry: Challenges And Solutions.
In a tsunami, devastation is created by far more than the wave itself. Debris that hits homes and other structures plays a huge role in a tsunami’s destructive power. But until now, engineers could only estimate the forces at work when debris, such as a floating telephone pole, hits a house. With support from the National Science Foundation, engineers from across the country have teamed up to design and carry out a series of large-scale tests aimed at better understanding exactly what happens when debris strikes. Part of the National Science Foundation Series “Science Nation.”
Showing collections 1 to 2 of 2
Biology related concepts
A collection containing 59 resources, curated by Benetech
A collection of Chemistry related resources
A collection containing 67 resources, curated by Benetech
