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Music is the art of combining sounds according to an artistic criterion and is a form of human expression. Musicians such as Richard Strauss and Arnold Schoenberg were interested in seeking new quality tone and sounds in the orchestra by adding new, nontraditional instruments. In 1909, Luigi Russolo in his "Futurist Manifesto" spoke about combining sounds from machines and non-traditional musical instruments and combining those sounds with an artistic criterion based on the imagination of the composer. But what role do technological advances play in the creative development and composition of music?
(Source: DCMP)
What is the future of human presence in space? How might things be different if there had not been a Cold War and a Space Race? What does humanity gain by venturing into the solar system? Three events are key moments in the conquest of space: the R-7 rocket launches the first satellite into space, President Kennedy's speech announces the United States race to the moon, and Neil Armstrong walks on the moon. Part of the "Butterfly Effect" series.
In 1977, scientists discovered a diverse community of organisms inhabiting the deep-sea hydrothermal vents of the Pacific Ocean. The sources of energy in these ecosystems are hydrogen sulfide and other inorganic chemicals that are abundant in the water that rises from the vents. Scientists discovered that some animals living near hydrothermal vents, such as the giant tube worm, have a symbiotic relationship with species of bacteria, which allows these animals to survive deep in the ocean. Part of the "I Contain Multitudes" series.
Jennifer Keyes began her NASA career as an intern and then a co-operative education student in 1999. In these programs, she worked on projects in atmospheric science, subsonic aerodynamics, and space exploration. Currently she is an aerospace engineer working as a systems analyst for the Office of Strategic Analysis, Communication, and Business Development at NASA Langley Research Center. In this role, Jennifer supports the senior leadership team as the lead for strategic governance and business development. Part of the "Women@NASA" series.
Using animation, this video follows the life and career of Faith Ringgold. Viewers catch a glimpse of her childhood in Harlem and her experiences through the cultural upheavals of the 1970s. Today, she is a respected contemporary artist and author. Part of Getting To Know Artists Series.
Using only gasoline to power cars back in 1905 was cheaper and easier, so the hybrid car was forgotten-until recently. The modern hybrid car has two distinct power sources working together to make it run: gas and electric power. Since the fuel widely used now is a non-renewable resource and becoming increasingly less affordable, the hybrid car is making a comeback. The benefit of the hybrid is that instead of running on gas, it uses non-polluting electric power when possible. Also, it helps cut pollution and saves drivers money at the gas pump.
In 1928, a physician named Alexander Fleming observed that a mold in one of his Petri dishes was killing the bacteria he was trying to grow. This strain of mold led to one of the most significant medical discoveries in history: the antibiotic penicillin. Antibiotics soon became lifesavers. However, even back then, Fleming knew that bacteria could become resistant to penicillin. This video describes how widespread use of antibiotics in medicine, agriculture, and household products can lead to the evolution of microbes that are resistant to multiple antibiotics. Part of the "I Contain Multitudes" series.
In 1936, Ruth Harkness, a dressmaker from New York, set off to China in search of the rare, elusive giant panda. Her goal was to bring one back alive to New York. She wanted to share the wonder of China's wildlife with the western world. She became the first explorer to do so, and set in motion a public fascination with these creatures that continues 80 years later. Part of "The Brain Scoop" series.
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.
When Carl Sagan was a young boy he went to the 1939 World's Fair. His life was changed forever, and from that day on he never stopped marveling at the universe and seeking to understand it better. As a child, Carl spent his days star gazing from the bedroom window in his Brooklyn apartment. As an adult, he became an internationally renowned scientist who worked on the Voyager missions. Based on the children's book by Stephanie Roth Sisson.
The estuary is part of the Plum Island Ecosystems LTER (Long Term Ecological Research). The LTER Network was created by the National Science Foundation (NSF) in 1980 to conduct research on ecological issues that can last decades and span huge geographical areas. Biogeochemist Anne Giblin, of the Marine Biological Laboratory, is leading a team of researchers who are studying the Plum Island salt marshes to determine how this 2,000-year-old ecosystem is holding up under climate change, land use changes, and sea-level rise. Part of the National Science Foundation Series “Science Nation.”
Since the invention of the internet during the 1960s, computer servers have been used for the exchange of information. Today things have changed; anyone can transfer files. Individuals can transfer files from one point to another or house them in a specific location within the network which can be used later for consultation. This is what is called "the Cloud".
As shown on the History Channel. Mount Vesuvius is the world's most dangerous volcano, and it threatens three million people. It was responsible for the most famous natural disaster of ancient history, the eruption that destroyed the Roman city of Pompeii. And its most recent blast was caught on film in 1944. Today Vesuvius is the most densely populated volcano in the world. Now recent scientific discoveries show that it is capable of an eruption larger than ever before thought possible and that hidden beneath Vesuvius there is a vast magma chamber of boiling hot rock, ready to come out.
The Grizzly Bear, America's largest, most spectacular predator, was on the brink of extinction in Yellowstone National Park until the 1975 Endangered Species Act made its recovery the biggest success story in conservation history. All wild carnivores need large ecosystems to survive, but when human economic interests, food, or small children encroach into their territory, conflicts between bears and people are inevitable. As we witness the impacts of environmental degradations and human encroachment on the last grizzly habitat in the lower 48 states, we ponder whether this American wilderness icon still faces extinction or if we will be able to co-exist with it.
In the late 1950s, a skeleton was discovered in a cave in Iraq that drove scientists to rethink what it means to be human. It was on of at least 9 sets of remains of Neandertals and was named Shanidar 1. The discoveries made about Shanidar 1 reveal that the Neadertals might not have been as primitive as originally thought. Part of the "Eons" series.
Born in 1962 and captured as a baby, Ivan was brought to a mall in Tacoma, Washington. For 27 years shoppers flocked to the mall to see Ivan, but public pressure built until a better way of life for Ivan was found at Zoo Atlanta. From the Congo to America, and from a local business attraction to a national symbol of animal welfare, Ivan the Shopping Mall Gorilla traveled an astonishing distance in miles and in impact. This is a true story based on the book by Katherine Applegate.
Figure 2.6 (OpenStax, Biology 2e) caption: In 1913, Niels Bohrs developed the Bohr model in which electrons exist within principal shells. An electron normally exists in the lowest energy shell available, which is the one closest to the nucleus. Energy from a photon of light can bump it up to a higher energy shell, but this situation is unstable, and the electron quickly decays back to the ground state. In the process, it releases a photon of light.
(Source: OpenStax)
Modern society is very much defined by its access to electricity. What if researchers could advance sustainable energy technologies to the point where everyone around the world had access to clean, cheap energy sources? Richard Smalley, 1996 Nobel Prize winning chemist, called it the greatest challenge facing the world in the 21st century and coined the phrase "terawatt challenge." Researchers at the Quantum Energy and Sustainable Solar Technologies (QESST) Center are hoping to meet much of the terawatt challenge with solar technology alone by vastly improving the performance of photovoltaic cells. Part of the National Science Foundation Series “Science Nation.”
In Miki, Japan, a six-story wooden model condominium was shaken by the equivalent of a 7.5 magnitude earthquake. The test was said to be the largest simulated earthquake ever attempted with a wooden structure. The full-scale building sat on a metal shake table that rocked it violently back and forth. The table, designed to hold up to 2.5 million pounds, reproduced forces based on those recorded during the 1994 earthquake in Northridge, California. But, it was scaled up by 180 percent to simulate an earthquake so violent it would only occur an average of once every 2,500 years. Part of the "Science Nation" series.
Goliath groupers are the largest of the groupers in the Atlantic basin. They were once so overfished in the Southeastern United States, they were considered for listing under the Endangered Species Act. Thankfully, a dedicated group of marine scientists worked to prompt NOAA to ban all of their harvest. This action in the early 1990s gave the grouper time to recover and gave scientists time to learn more about this fish.
Showing collections 1 to 4 of 4
Biology related concepts
A collection containing 59 resources, curated by Benetech
3D models and images of the entire periodic table of elements
A collection containing 118 resources, curated by Library Lyna
Resources to teach younger students about animals
A collection containing 58 resources, curated by DIAGRAM Center
A collection of Chemistry related resources
A collection containing 67 resources, curated by Benetech
