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How does the Earth travel around the sun? Here the scientists will create a sundial to find out. The scientists will also explain how a remote control works. Part of the House of Science Series.
(Source: DCMP)
Horseshoe crabs are "living fossils" more closely related to spiders and scorpions than they are to crabs. They get their name from the smooth, hard shell (exoskeleton) that is shaped like a horseshoe. Part of "The Remarkable Horseshoe Crab" series.
The ancestors of the horseshoe crab have roamed Earth for over 450 million years. They may look creepy, but they are not dangerous. Their numbers have been declining, and scientists have been trying to help preserve them. Part of "The Remarkable Horseshoe Crab" series.
The Center for Remote Sensing of Ice Sheets (CReSIS) is a Science and Technology Center established by the National Science Foundation (NSF) with the mission of developing new technologies and computer models to measure and predict the response of sea level change. CReSIS provides students and faculty with opportunities to pursue exciting research in a variety of disciplines; to collaborate with world-class scientists and engineers in the US and abroad; and to make meaningful contributions to the ongoing, urgent work of addressing the impact of climate change. Part of the National Science Foundation Series “Science Nation.”
Meet an education specialist from the Delaware National Estuarine Research Reserve. She says becoming a scientist is all about being curious, and she helps researchers count the horseshoe crabs on the Atlantic coast. Part of "The Remarkable Horseshoe Crab" series.
During horseshoe crab spawning season, volunteers are dispatched along the Mid-Atlantic coast to help scientists track their populations. Learn how citizen scientists track the data to help preserve the horseshoe crab. Part of "The Remarkable Horseshoe Crab" series.
How do horseshoe crabs keep humans healthy? They have blue, copper-based blood, which quickly clots in the presence of bacterial toxins. Medical researchers use it to test intravenous drugs, vaccines, and medical devices, ensuring that they are free of bacterial contamination. Part of "The Remarkable Horseshoe Crab" series.
While it is relatively straightforward to build a box on the macroscale, it is much more challenging at smaller micro and nanometer length scales. At those sizes, 3D structures are too small to be assembled by any machine and they must be guided to assemble on their own. With support from the National Science Foundation, Brown University mathematician Govind Menon and Johns Hopkins University chemical and biomolecular engineer David Gracias are developing self-assembling 3-D micro and nanostructures which can be used in a number of applications, including medicine.
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.
What happens to the body during sleep? Explores the mystery of REM sleep, shows a computer display of the waves that sweep across the brain during sleep, and presents extraordinary footage of a cat "acting out" its dreams. The analogy of comparing sleep to a ship on automatic pilot graphically illustrates how some functions must and do continue while the conscious brain is asleep.
Can people in remote rural areas who are far from electric generating plants get power for their lights and appliances? Solar cells make it possible. Mechanical and electrical engineers at the US Department of Energy's Sandia National Laboratories take viewers through the process of designing and installing solar cell panels in remote locations.
What's the difference between thermoplastics and thermoset plastics? The primary physical difference is that thermoplastics can be remelted back into a liquid, whereas thermoset plastics always remain in a permanent solid state. Part of the "Ask a Scientist" series.
Gravity rules the life cycle of stars. During the Red Giant dying stage in the life of an average size star, its outer layers are blown off in vast clouds of dust and gas called "nebulae" that contain hydrogen, oxygen, and nitrogen. Gravity crushes the remaining atoms into a remnant core called a white dwarf. The gravity of giant stars-10 to 20 times larger than average-will, at the end of their life in a supernova explosion, crush together even mutually repulsive protons and electrons, leaving a remnant rotating core of neutrons (i.e., a pulsar). Also explains how stars 20 to 100 times average size collapse into a core so dense that its gravity doesn't even allow light to escape (i.e., a black hole).
Forensic osteological research facilities are outdoor compounds where donated human bodies are studied during decomposition. Using archeological field techniques, researchers discover what happens to human remains when exposed to a number of different environmental conditions. Studying these skeletal remains in different contexts proves extremely beneficial in solving real-life humanitarian and criminal cases. Please note: Preview of this title is highly encourage due the sensitive material covered.
People have been discovering the traces and remains of prehistoric creatures for thousands of years. They have also probably been telling stories about fantastic beasts since language became a thing. Is it possible that the monsters that populate myths and legends were influenced by the fossil record? Part of the "Eons" series.
Host Emily Graslie interviews Peter Makovicky, Associate Curator of Paleontology, about a new species of dinosaur he discovered: the Siats meekerorum. Based on the skeletal remains, evidence points to this being a newly discovered meat-eating dinosaur. Part of "The Brain Scoop" series.
Explores the strange and relatively unknown world of sleep-a world in which we spend approximately one-third of our lives. Shows how the discovery of REM (Rapid Eye Movement) during our dream period in the early 1950s by Dr. Nathaniel Kleitman at the University of Chicago brought about an understanding of the mechanism of sleep. Before his discovery, it was believed that during sleep the brain was in a state of rest. Also, overviews the nature and frequency of dreams and nightmares, and sleep disorders such as insomnia, apnea, and narcolepsy that affect millions of Americans.
Students learn why fossils are often referred to as "windows to the past." The basic requirements for fossil formation are identified. Examples of various fossils highlight different types of fossil preservation, including petrification, imprints, molds and casts, freezing, amber fossilization, and preservation in tar pits. Finally, various uses of fossils are discussed. Additional terminology and concepts: cement, paleontology, fossil fuels, preserved remains, paleontologist, sediments, and limestone.
In this special episode, host Jeff Corwin dives alongside brave men and women of our armed forces who were injured in the line of duty. As these wounded veterans experience the wonder of Georgia Aquarium and swim alongside giant whale sharks, they also find the strength to heal. Jeff makes new friends, listens to heroic stories, and reminds us all to never forget the people who keep our country safe.
Parakeet is upset because he has no family. Parakeet talks about Family Day. Amanda reminds him he has no family. The first guest, the dog, says his brother did not want to go with him to Family Day. The cat, who really is the stepbrother of the cat, considers they are not brothers. Parakeet shares his opinion, but Amanda once again reminds him he has no brothers or family; therefore, should not speak on the subject. The fleas show a documentary on different types of families. The celebrity guest, Residente de Calle 13, explains that family goes beyond blood ties. Amanda's realizes Parakeet's family is his friends.
Showing collections 1 to 5 of 5
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