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How do plants send distress signals? Scientists reveal images that show it's through the release of calcium. Other segments in this episode include features on four personality types based on new data and a anti-frosting surface that fights ice with ice. Part of the "4 Awesome Discoveries You Probably Didn't Hear About This Week" series.
(Source: DCMP)
Anyone who has ever driven in freezing rain knows all too well the potential hazards of an ice storm. These powerful winter weather events are also capable of catastrophic impacts on forest ecosystems. Syracuse University bio-geochemist Charley Driscoll and U.S. Department of Agriculture (USDA) Forest Service ecologist Lindsey Rustad are part of a team to monitor how a forest ecosystem responds to and recovers from ice storms. Part of the “Science Nation” series.
In this episode, researchers are exploring ways to make carbon nanotubes less expensive. The process would use carbon dioxide sucked out of the air. Researchers are also working to identify bacteria and viruses found in ocean spray. Also in this episode, scientists are attempting to design a battery that would charge electronic devices in seconds. Part of the "4 Awesome Discoveries You Probably Didn't Hear About This Week" series.
New developments in gene editing reveals that wild plants can be put on the fast track for domestication and the grocery store. Advances in astronomy have captured the inner working of the rare star known as luminous blue variables. Other segments include the use of macrophages to help heal injured muscles and new evidence shows that wildlife is thriving in the suburbs. Part of the "4 Awesome Discoveries You Probably Didn't Hear About This Week" series.
Non-native plants in homeowner's yards endanger wildlife, and experts recommend planting more than 70 percent native plants so plants, insects, and birds can thrive. Additionally, researchers are tracking the spread of neurodegenerative diseases in brains. Other segments include fracking wastewater accumulation found in freshwater mussels' shells and a new protein sequencing method used in biological research. Part of the "4 Awesome Discoveries You Probably Didn't Hear About This Week" series.
Hidden in a vault outside Paris, vacuum-sealed under three bell jars, sits a palm-sized metal cylinder known as “Le Grand K.” Forged in 1879 from an alloy of platinum and iridium, it was hailed as the perfect kilogram—the gold standard by which other kilograms would be judged. However, it is wasting away, and scientists are scrambling for a more reliable standard. Part of the "Uno Dos of Trace" series.
Researchers have developed a new way of delivering insulin to patients. It is patterned after the shape of a tortoise shell. New research shows that bees keep their hives cool based on the physics of friction and flow. Other segments include the discovery of carbon dioxide reservoirs in the ocean floor and evidence that tropical reef can flip from coral clusters to fields of seaweed. Part of the "4 Awesome Discoveries You Probably Didn't Hear About This Week" series.
A research team has found that sweat is better than saliva and tears for noninvasive testing because it provides information much the same as blood. The team has developed Band-Aid-like sensors to collect health information from sweat. Other segments include the evidence that temperature determines sex for some animals, new methods for delaying ice and frost, and a historic discovery of 500 million-year-old fossils. Part of the "4 Awesome Discoveries You Probably Didn't Hear About This Week" series.
This episode features a new device that is designed to safely capture and release soft-bodied creatures for scientific studies, and a group of scientists at Stanford have discovered that some bacteria are protected by a coating similar to armor. Also in this episode, researchers are working to engineer bacteria that create fertilizer out of air. Part of the "4 Awesome Discoveries You Probably Didn't Hear About This Week" series.
The Lemhi Valley is a sagebrush steppe in Eastern Idaho, along the border with Montana. It is a critical habitat for the pygmy rabbit, and University of Idaho mammalian ecologist Janet Rachlow is gathering data to create maps showing where and when the rabbits spend their time. What they learn about the links between habitat features and habitat use could help inform future decisions involving land management and restoration for these types of environments. Part of the “Science Nation” series.
Iridium is a rare element used to light up cell phones and TVs. However, researchers have found a way to use a more common element to power electrical devices: copper. Researchers are also developing a better treatment for osteoarthritis through nanotechnology. Other segments include research into specialized metabolites and devices that translate sign language. Part of the "4 Awesome Discoveries You Probably Didn't Hear About This Week" series.
Humans construct boundaries around homes, neighborhoods, and nations to bring order to a chaotic world. However, they rarely consider how these boundaries affect the environment or others. Photographer Krista Schlyer and biologist Jon Beckman study how fabricated barriers influence the movement of wildlife. Schlyer and Beckmann have seen the damaging impacts resulting from the wall built along the Mexico-United States border. Humans probably will not stop constructing walls and fences any time soon, but planning the boundaries with wildlife in mind can help prevent these structures from causing environmental harm. Part of the "Think Like a Scientist" series.
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.”
Mobile computing is accelerating beyond the smartphone era. Today, people wear smart glasses, smart watches, and fitness devices, and they carry smartphones, tablets, and laptops. In a decade, the very same people are likely to wear or carry tens of wireless devices and interact with the Internet and computing infrastructure in markedly different ways. Computer scientist Xia Zhou is working to make sure there are no traffic jams with the increased demand. With support from the National Science Foundation, Zhou and her team at Dartmouth College are developing ways to encode and transmit all that data faster and more securely. Part of the "Science Nation" series.
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.
These city kids from Boston may not look like conventional farmers, but they’re spending part of their summer getting their hands dirty. They’re learning how to build solar-powered hydroponic systems that grow organic vegetables without soil. With support from the National Science Foundation, Boston College educator Mike Barnett and his team developed the Urban Hydrofarmers Project to engage students in math and science through hydroponic farming and green energy technology. And, because the teens sell what they grow at farmers’ markets, the students get to experience green entrepreneurship. Barnett and his team have also partnered with the STEM Garden Institute to bring hydroponic farming into classrooms throughout the U.S. Part of the National Science Foundation Series “Science Nation.”
In this episode, citizens and scientists partner to gather data on many environmental concerns around the world. A group of citizen scientists track air and water pollution at fracking sites in Wyoming and 5 other states. They use simple but science-based techniques developed by the “Bucket Brigade.” Volunteers from Trout Unlimited monitor water quality regularly, generating baseline data that will prove invaluable in the event of future pollution events. Community members connected with professional researchers explore Flint’s drinking water crisis and help other cities test their water quality. In China, citizens use government data and a unique mobile app to report environmental crimes. Part of "The Crowd and the Cloud" series.
From cleaning supplies to pharmaceuticals, surfactants are the compounds that make soap bubbly, paint spread smoothly, and medication dissolve more easily. Most surfactants are currently made from non-renewable petroleum sources and many of these surfactants don’t break down easily after they are discarded. Some can persist in the environment for decades. Their widespread use and environmental persistence has raised concerns about toxicity. At the University of Arizona, Jeanne Pemberton and her cross-disciplinary team work to create new “green” surfactants based on sugars that are generally known as glycolipids. With support from the National Science Foundation, Pemberton and her team are exploring the recent discovery of a versatile synthesis that allows production of many different types of glycolipids in large quantities. Some of these glycolipids are modeled after naturally occurring biosurfactants and some can be produced relatively inexpensively using renewable natural resources. Part of the National Science Foundation Series “Science Nation.”
Showing collections 1 to 5 of 5
A collection of Chemistry related resources
A collection containing 67 resources, curated by Benetech
Biology related concepts
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A collection of simulations from PhET.
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Resources related to vision
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Resources to teach younger students about animals
A collection containing 58 resources, curated by DIAGRAM Center
