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Stuart Rowan, a professor at Case Western Reserve University, has created polymers that are able to self-heal when heat is applied using a special light. Part of the Fast Draw Series.
(Source: DCMP)
In this episode, researchers discuss the novel applications for a self-healing reverse filter. For example, researchers are studying its application in unsanitary environments. Scientists also ask the question: Is laziness a fruitful strategy for the survival for some species? Researchers are studying the link between metabolic rate and extinction. In the final segment, weather forecasts are predicting that El Niño and La Niña are likely to intensify wildfires and increase drought risk. Part of the "4 Awesome Discoveries You Probably Didn't Hear About This Week" series.
Scientists search the earth and sea for new medicines, knowing that half of today's curative preparations come from or contain ingredients from nature. Names some plants that provide components for familiar medications, and notes, for example, that 3,000 plants help control or fight different cancers. The research process to locate, refine, and test new drugs is long and complex. Natural substances from rain forests, marine life, and even soil have enormous potential for healing.
The body is like a self-supporting hospital, able to deal with its own with wounds, bacterial invasions, fractures, and obstructions to its various passages. Follows the sequence of events over seconds and weeks when skin or bone is damaged, and shows the defensive reactions of blood clotting, fever, and mending of bone fractures.
Since the time of the ancient Greeks, humans have been using spider silk to dress wounds. Scientists now know spider webs not only have healing qualities, they can be stronger than steel. University of Wyoming Molecular Biologist Randy Lewis adds an almost science fiction aspect to the study of spider silk: making large quantities of it by “growing it” in goat’s milk. With funding from the National Science Foundation, Lewis has cloned and sequenced genes for the proteins that make up five different spider silks, some stronger than Kevlar, others more elastic than nylon.
Some bandages are embedded with medicine to treat wounds, but researchers at Harvard University and Brigham and Women’s Hospital have something much more sophisticated in mind for the future of chronic wound care. With support from the National Science Foundation, engineer Ali Khademhosseini and a multidisciplinary team are bringing together advances in sensors, biomaterials, tissue engineering, microsystems technology, and microelectronics to create “smart bandages” for wounds that require ongoing care. The devices, known collectively as flexible bioelectronics, will do much more than deliver medicine. They will be able to monitor all the vital signs of the healing process and make adjustments when needed, as well as communicate the information to health professionals who are off-site.
