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North America is continually reinventing itself. Experts discuss the various geographic landforms of the continent. They also touch on the active tectonic forces of the San Andreas Fault and the potentially hazardous dormant volcano in Yellowstone National Park. Part of the "Voyage of the Continents" series.
(Source: DCMP)
Understanding what happens at the epicenter of an earthquake, as the tectonic plates beneath the earth shift and the earth shakes, could help better predict when and where the next big one will hit. For the past six years scientists from a number of institutions have joined in a project called San Andreas Fault Observatory at Depth, or SAFOD. They have drilled to the core of the San Andreas Fault, near Parkfield California, down to a specific area along the fault known to experience a number of small earthquakes every year. By retrieving and studying core rock samples from that site, geologists Chris Marone and Brett Carpenter and hydrogeologist Demian Saffer are getting a better understanding of the types of rocks involved in major quakes, versus the rocks present at more forgiving ones.
University of California, Berkeley seismologist Peggy Hellweg discusses the difference between a tremor and an earthquake. She also explains how TremorScope stations record deep tremors along the San Andreas Fault in central California. These stations reveal complex faulting behavior in the deep crust that is surprisingly different from earthquakes in the upper crust.
What will happen to Los Angeles when the big one strikes? The answer may be found at an earthquake site over 6,000 miles away. Examines why the 7.4 earthquake that struck Izmit, Turkey, killed over 17,000 people in 1999. Explains why even trained rescuers fight an impossible battle. Offers suggestions as to what Los Angeles must do to be better prepared for the earthquake that scientists see as inevitable, and to prevent this same tragedy from happening.
Sand particles from the Sahara desert have long been known to travel across the Atlantic Ocean and southward to the Amazon rain forest. These accumulations are known as dust carpets, and they form as water molecules adhere to the sand particles. As water and sand adheres to one another, they form droplets that accumulate into clouds. However, the Mongolian desert dust carpets present problems for ecosystems upon which it falls. This program explores the science behind the storms and their impact on global climate.
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 had gone to see his friend, the wise old man who lives on the other side of the village. There were such pretty flowers that Moko could spend the entire day contemplating them. The old man picked a beautiful rose and handed it to Moko. But on the way back, the sun was so hot that the flower began to wilt. Moko was so sad that he laid the withered rose on the ground and started to cry. The wind rose, sweeping across the ground. Moko then saw that his rose was still there, more beautiful than ever and sparkling, its petals solid as stone. It had become a desert rose, as rare as water in the desert.
Focuses on animal life in four extremely inhospitable deserts: the Namib's adaptive elephant, a dromedary roundup in Australia's outback, fish in thermal lakes in Mexico's Chihuahua desert, and the Sahara's Ennedi crocodiles. Survival is an eternal challenge to any life in these places.
In this series, explorers travel the diverse and natural sanctuaries of the Gulf of California. Each episode highlights the fauna and flora of this region. Some of the locations visited include Revillagigedo Islands, the Espíritu Santo (Holy Spirit) National Park, and Cape Pulmo. Part of the "Inside the Sea" series.
In contrast to the peaceful wildlands featured in the prior segments, the urban campus of the University of California-San Diego (UCSD) seems like an unlikely place to find field biologists studying juncos. But in the early 1980s, some juncos decided to make this atypical urban and coastal habitat their year-round home. Since then, scientists have documented a remarkable array of changes in the physical traits, behaviors, and physiology of the colonist population of juncos at UCSD when compared to juncos from the nearby native range. Part of Ordinary Extraordinary Junco (Chapter 6).
Is there beauty in a kidney cell? Microscopist Ruben Sandoval thinks so. Sandoval creates kaleidoscope--like artworks from the microscopic cell images he generates through his work. His art was born from the science he practices, and his scientific techniques have now been influenced by his art. Part of the "Artrageous With Nate" series.
Over 3500 years ago, a Minoan Community flourished on Santorini Island. Archeologists have discovered artifacts and frescos this Bronze Age civilizations left behind. Evidence from the archeological dig suggests the culprit of their demise was the Santorini Volcano. Further evidence supports that Santorini’s eruption was more massive and destructive than Vesuvius. Segment of video from Wild Chronicles Series.
NASA robotics engineer Sandeep Yayathi explains how he designs and builds humanoid robots that can work alongside astronauts. Part of the "Design Squad Nation" series.
Dr. Chris travels the globe and experiences the extremes from lava to sand to snow. He begins his journey on the island of Vanuatu where he comes face-to-face with an active volcano. His next stop is Abu Dhabi where he samples all the city has to offer. Then, Dr. Chris heads to the Australian Alps and gets a little carried away when a team of sled dogs takes him for a ride. Part of " The Open Road With Dr. Chris" series.
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 and Mei-Lei head off to the forest to pick some plants that can't be found anywhere else. Moko is following Mei-Lei's lead as she knows what to do. She picks a leaf and lets it float away, and Moko picks it up. All of a sudden, both his feet sink into the quicksand and he can't get free. Some fishermen come to his rescue and they pull him to safety. Moko and Mei-Lei head back towards the village thinking that the forest is jealous and possessive, since it clearly wanted to keep every leaf and every plant for itself.
Hurricane Sandy was the deadliest of the 2012 hurricane season and was the second costliest hurricane in U.S. history. University of Washington civil engineer Dorothy Reed and her team received a grant from the National Science Foundation to study how Hurricane Sandy affected the infrastructure of the New York Metropolitan area, including the power and transit systems. Reed and her team area creating highly detailed maps to construct a comprehensive street-by-street view of Sandy’s devastation.
This episode reveals the devastating impact of human activity on the ocean, focusing on the Mediterranean's contentious bluefin tuna fishery and the Gulf of Mexico's massive deoxygenated dead zones. It also celebrates various conservation efforts and sustainable practices. Part of the "One Ocean" series.
In less than a second a sandfish lizard can dig its way into the sand and disappear. The sandfish's slithering moves are inspiring new robotic moves that could one day help search and rescue crews find survivors in piles of rubble left from disasters. With support from the National Science Foundation, physicist Daniel Goldman and his team at Georgia Tech are studying the lizard’s movements, using x-rays to track it underground. Their findings will contribute to engineering designs for deployable robots that could one day help canine search and rescue teams find survivors more quickly.
The gray whale has survived the threat of extinction throughout the nineteenth and twentieth centuries. Today, these wonderful giants find refuge in the lagoons of Ojo de Liebre and San Ignacio. These sanctuaries also promote responsible tourism and sustainable fishing methods. Part of the "Bios: Nature and Society" series.
The Coastal Plains Institute has teamed with governmental agencies, nonprofit organizations, volunteers, and local children to reintroduce the striped newt to the Munson Sandhills region of the Apalachicola National Forest. After an extended drought, striped newts disappeared from the forest. During a recent exploration of the forest, a group of citizen scientists discovered the newts are making a comeback. Part of the "EcoAdventures in North Florida" series.
Showing collections 1 to 2 of 2
Resources to teach younger students about animals
A collection containing 58 resources, curated by DIAGRAM Center
A collection of simulations from PhET.
A collection containing 15 resources, curated by Charles LaPierre
