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Unlike lizards, humans cannot regrow limbs. But humans can regenerate their livers. A MIT student explains how and why. Part of the "Science Out Loud" series.
(Source: DCMP)
Research engineers and students in the University of California, Los Angeles, Biomechatronics Lab are designing artificial limbs to be more sensational, with the emphasis on sensation. With support from the National Science Foundation, the team, led by mechanical engineer Veronica J. Santos, is constructing a language of touch that both a computer and a human can understand. Part of the National Science Foundation Series “Science Nation.”
At the twilight of an active life, Anna is now bedridden due to a serious fall. What makes the elderly--even those who are in full possession of their mental and physical faculties--more prone to falling than younger people? As this program demonstrates, the answer lies not in the body or the brain alone, but in their interconnection. Exploring Anna's past dreams of becoming a ballerina, the film shows how complex physical motion, such as dancing or even typing, requires sophisticated coordination between the body's neural, muscular, and skeletal systems. How aging affects such coordination and how new artificial limb technology enables movement are running themes in the program.
This creature was found 1,800 feet deep in the ocean. It’s called a basket star. This extraordinary invertebrate has a mass of twisting and turning arms that can measure a meter long. Each branch has tiny sharp hooks allowing the creature to capture prey, and it feasts mainly on zooplankton. Basket stars are able to grow their limbs back if they are broken or chopped off by predators. Part of the "Creatures of the Deep" series.
The sense of touch is an invisible force of human nature. Today, touch is undergoing a revolution. Science has pushed the limits of nature thanks to technological touch. It is now possible to touch objects virtually that are invisible or located thousands of kilometers away. A simple movement in the air is enough to control them. Medical technology has even succeeded in giving a sense of touch to bionic limbs made of metal, plastic, wires, and processors. Slowly but surely, prostheses are starting to perform better than natural limbs. Part of the “Human + The Future of Our Senses” series.
Students explore the features of amphibians. Concepts and terminology include cold-blooded, metamorphosis, frog, tadpole, toad, and salamander.
See the extraordinary life of the octopus as never before. Segment from Wild Chronicles Series.
As millions of receptors in the human nervous system respond automatically to light, sound, touch, and smell, and send information to the brain, the body acts. Explores a condition amputees experience known as "phantom pain" or "phantom limb." Also explains how the blind "see" words with the receptors in their hands.
Gives basic first-aid techniques to help an injured dog in the first critical moments after a medical emergency occurs until the dog can be transported to a veterinarian. Covers: what's normal for my dog, scene safety, muzzles, rescue breathing, CPR, choking, fractures, car accidents, shock, poisoning, snakebites and more. Lists what to include in a pet first-aid kit. Recommended by ASPCA.
How could brain-computer interfaces be used in the real world? Katherine Pratt, a researcher at the Center for Neurotechnology at University of Washington, discusses this question. Part of the "Ask a Scientist" series.
Arthropods have jointed limbs, hard exoskeletons, segmented bodies, and molt--or shed--their shells in order to grow. Crabs, beetles, centipedes, squillas, pill bugs, and walking sticks demonstrate a variety of ways some of the one million different species of arthropods walk.
The octopus is a master of stealth and disguise. Scientists have set up several obstacles and mazes for octopi to travel through in an attempt to study their anatomy. Segment of video from Wild Chronicles Series.
Working in the islands of the Caribbean, biologist Jonathan Losos has discovered the traits that enable dozens of anole species to adapt to different vertical niches in the forest. Differences in limb length, body shape, and toepad size allow different species to flourish on the ground. However, lizards living on thin branches or high in the canopy have different characteristics. These varied adaptations have played a key role in reproductive isolation and the formation of new species.
Genetic and neurological research has led to increasingly sophisticated medical capabilities, resulting in a growing number of moral and ethical quandaries. Surveys recent milestones in biology, many of which have produced as much controversy as insight. Reporting on the newly identified anti-aging gene SIR2 and the cross-species implantation of stem cells, it also inquires into artificial limb technology, the dynamics of the teenage brain, and the storage of environmental toxins in the human body. A visit to the American Bible Belt, including Kentucky's Creationist Museum, highlights the ongoing debate over human origins.
Explains the characteristics of plankton and its two types: phytoplankton and zooplankton. Animation shows where plankton flourish and what they need to reproduce. Notes the importance of sunlight, the thermocline, and moderate temperatures for plankton to "bloom." Stresses that without plankton, sea life would vanish.
It was once believed that organic compounds, light, and water were needed to sustain life, but life has been found in complete darkness underwater. National Geographic Explorer Bob Ballard discovered Lost City, an underwater mountain range, and it is teaming with life. Segment of a video from Wild Chronicles Series.
Describes how coral reefs form and their importance to the sea life they sustain. Gives characteristics of hard and soft coral and shows examples, pointing out that both grow extremely slowly. Locates major coral reefs on a map and restates reefs' contributions to humans. Names several different threats that could destroy these wonderful phenomena.
A shark attack survivor now knows what it feels like to be part bionic man. 23-year-old amputee Craig Hutto has volunteered to help test a state-of-the-art prosthetic leg with powered knee and ankle joints. With support from the National Science Foundation and continued support from the National Institutes of Health, Vanderbilt University mechanical engineer Michael Goldfarb has spent several years developing the leg, which operates with special sensors, an electric motor, a battery, and computer technology. Sensors monitor the user's motion and microprocessors figure out what the person is trying to do. Goldfarb says the powered leg reduces the lag time between a real leg and a prosthetic one. Hutto confirms that the powered prosthetic is much better at anticipating his next move.
The evolution of the arms, legs, necks, and lungs of the human body can be traced to a fish that lumbered onto land some 375 million years ago. The genetic legacy of this creature can be seen today in human DNA, including the genes used to build hands and limbs. Part of the “Your Inner Fish” series. Please note this title shows corpses in anatomy labs and contains mature themes.
Dr. Chris pays a visit to birthday girl Zambi, a big, boisterous lion cub who’s turning one. Dr. Lisa must attend to a cat that has swallowed a ribbon from a birthday present. She urgently needs to locate the ribbon and get it out, or her patient will have to undergo surgery. Finally, Dr. Chris must help get a cranky koala down from a tree. Part of the "Dr. Chris Pet Vet" series.
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Resources to teach younger students about animals
A collection containing 58 resources, curated by DIAGRAM Center
