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After a few relatively mild winters on the northern Gulf coast, cold intolerant black mangroves have started to multiply in salt marshes. Dr. Hughes is conducting an experiment to test whether some mangroves are better adapted to colder climates. Part of the series "In The Grass, On The Reef."
(Source: DCMP)
Half a century ago, astronauts got on top of a really big rocket and sent a tiny little capsule on a 384,000 km trip to the moon and back. They were able to do it because a lot of extremely smart and dedicated people pushed engineering and chemistry to the limits. In this episode, host Joe Hanson travels to NASA in Houston to talk to astronaut Don Pettit about the rocket equation. Part of the "It's Okay to Be Smart" series.
With support from the National Science Foundation, aerospace engineer Michael Philen and his team at Virginia Tech are investigating the biomechanics of fish locomotion, in hopes of contributing to the next generation of robotic fish and underwater submersibles. They’re studying how fish use their muscles to swim efficiently and execute underwater maneuvers, such as darting around in perfectly synchronized schools. They’re also developing new smart materials, such as a bioengineered hair that is modeled after the hair cell sensors on the side of fish that allow it to detect minute changes in water flow. Part of the National Science Foundation Series “Science Nation.”
Dr. Randall Hughes is conducting an experiment into how well black mangrove propagules from both local and south Florida trees grow in Saint Joseph Bay. Following a harsh winter, she is able to more thoroughly test the survivorship of black mangroves in northern Gulf marshes. Part of the series In "The Grass, On The Reef."
Moko is an explorer. As he travels the world continent by continent, he makes many friends and discovers many natural phenomena which sometimes delight him, and other times scare him. Each animated episode recounts an adventure and takes an "original story" approach to explaining these natural phenomena. In this episode, Moko wonders why the moon changes shape so often. Sometimes, when he sees the moon rising in the distance like the sun, he thinks that by walking towards the horizon he could get closer and find out more. That way he could even ask the moon itself. During his long walk towards the ever-receding horizon, Moko watches the moon constantly changing shape. Sometimes it's a crescent like a smile, sometimes a disc of light; sometimes it's white, sometimes yellowish. It travels across the sky but you can't see it moving. One night, Moko decides to watch the moon perform its lovely dance among the stars. He figures he'll never reach the horizon, and in fact maybe the moon just wants to put on a show, to be watched more often.
Take a tour of the moon's surface. Images and topographic maps show craters, rocks, mountains, basins, and valleys found on the moon. These maps help improve scientific understanding of how Earth's moon and other rocky planets in the solar system evolved.
Host award-winning geoscientist, Richard Alley provides an eye-opening look at some of the world's most important case studies in smart energy. Alley travels to Spain and Morocco where large-scale solar farms and individual photovoltaic panels atop tents in the Sahara are beginning to bring the vast potential of the sun down to Earth. In Brazil, abundant natural resources are transformed into efficient, sustainable biofuel, making Brazil the only nation whose cars could keep running if all gasoline were to vanish. In Denmark, and West Texas, citizens have taken sustainability into their own hands by becoming stakeholders in wind turbines. And in China, he explores multiple sustainable energy technologies, including exclusive footage from GreenGen, the world's most advanced low-carbon emissions power generation plant. Part One Earth: The Operators’ Manual.
In the conquest of space today, it is robots, not humans, who get the glory. Describes missions that represent the foreseeable future in space exploration: sensor-filled craft and remotely operated devices going where people can't. The program features Deep Impact, a comet-blasting probe; Cassini-Huygens, pioneer of Saturn's moon, Titan; Robonaut, a machine designed to perform human tasks; Ranger, a huge mechanical spider that could conceivably repair the Hubble Space Telescope; the Hubble itself, aging but carrying on; and the planned Webb Space Telescope, Hubble's eventual successor on the vanguard of deep-space science.
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.
Dr. Randall Hughes is examining diversity within the marsh. She discusses the diversity of the foundation species of a marsh: smooth cordgrass (Spartina alterniflora). Does having a greater diversity of genetically distinct plants make for a healthier marsh? Part of the series "In The Grass, On The Reef."
Demonstrates techniques for using a student microscope to achieve spectacular images. Emphasizes correct lighting procedures and the techniques required for viewing living cells.
Cassini's sleuthing revealed an active ocean world. The spacecraft found evidence of geysers coming out of the south pole of Enceladus. After over a decade of research, NASA scientists know there is a potential for the ocean on Enceladus to support life, and that has altered the way scientists think about where life might be found in the solar system and in the worlds beyond.
Paleoanthropologist Dr. Tim White discusses how his team unearthed the fossil of Ardipithecus ramidus, an early hominid that lived about 4.4 million years ago. Dr. White discusses the fossil record and hominid evolution.
The diversity of rotifers is stunning, and many different species are overviewed. Planktonic rotifers have special adaptations for open water life. Nematodes (roundworms) include a number of important human parasites, seldom seen but easily found. Tree moss, leaf litter, and compost piles swarm with nematodes.
Seagrass beds provide an array of services to both humans and animals. Dr. Randall Hughes studies the seagrass beds of Saint Joseph Bay to better understand these services. She also notes the decline of this important ecosystem. Part of the series "In The Grass, On The Reef."
University of Rochester electrical engineer Mark Bocko has combined his passion for music with his passion for engineering, devising a way to digitally compress music files. Bocko’s team of engineers and musicians at Rochester’s Eastman School of Music are also helping uncover some extraordinarily precise details about just how music is made. With support from the National Science Foundation, they have built a computer model of the clarinet, entirely from real world acoustical measurements taken from human musicians. Measuring such things as how hard the musician is blowing into the instrument and the pressure the musician applies to the reed, they have modeled the way music is made.
After Charles Darwin first visited the island archipelago of Galapagos in 1839, it took him another twenty years to decipher that the scene he'd witnessed was the most perfectly preserved biodiversity on the planet. His theory of evolution, published 150 years ago, pulled back the curtain on a debate that had been simmering for years, and still percolates. Today Darwin would be surprised by the tourist mecca Galapagos has become--200,000 visitors a year, 40,000 permanent residents. The impact on the most unique collection of endemic wildlife in the world has been heavy. Too many people are bringing too many of their ways (and invasive species) from the outside world that are threatening the future of this one-of-a-kind place. What would Darwin think of how Galapagos has evolved in the twenty-first century?
On January 14, 2005, the European Space Agency's “Huygens” probe made its descent to the surface of Saturn's hazy moon, Titan. Carried to Saturn by NASA's “Cassini” spacecraft, “Huygens” made the most distant landing ever on another world and the only landing on a body in the outer solar system.
Nano expert Jameson Wetmore from Arizona State University offers tips for managing the potential risks associated with nanotechnology. Part of the “Ask a Scientist” series.
Explores the nature, habits, and habitats of manatees, one of earth's most gentle creatures. Explains how they are endangered and how they are nursed back to health after accidents with boats.
Showing collections 1 to 7 of 7
Resources to teach younger students about animals
A collection containing 58 resources, curated by DIAGRAM Center
Biology related concepts
A collection containing 59 resources, curated by Benetech
A collection of Chemistry related resources
A collection containing 67 resources, curated by Benetech
Collection of anatomy resources
A collection containing 21 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 related to vision
A collection containing 12 resources, curated by Charles LaPierre
A collection of simulations from PhET.
A collection containing 15 resources, curated by Charles LaPierre
