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This program discusses the concept of the expanding universe. Calculations by astrophysicists show that the cosmos seems to be speeding up. The 50-billion galaxies thought to comprise our universe are rapidly moving farther apart. Scientists are working to understand the nature of space and the purpose of dark energy and dark matter related to the expanding universe.
(Source: DCMP)
The Atacama large Millimeter/Sub-millimeter Array, or ALMA, is a vast array of radio telescopes and the most powerful observatory of its kind. ALMA is stationed in the Atacama Desert of Chile which is one of the world’s best sites for observational astronomy because of the high altitude, nearly non-existent cloud cover, dry air and lack of light pollution and radio interference due to the small populations. ALMA peers into previously hidden regions of space with unprecedented sharpness and sensitivity.
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.
The Magic School Bus is an award winning animated children’s television series based on the book series of the same title by Joanna Cole and Bruce Degen. It is notable for its use of celebrity talent and being both highly entertaining and educational. Ms. Frizzle turns the class into water so they can experience the town's water system firsthand. Not everything goes as planned, though, when they realize that Arnold has left Ms. Frizzle's magic keys in the girl's bathroom at the school. How will they turn back to normal this time?
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, when Moko sees a shooting star zip right over the mountaintops, he wonders whether there isn't someone over there making stars. He goes to the mountain and finds a woman tending a huge fire. Thousands of sparks fly out of the fire and rise, twinkling, into the sky. He thinks he has discovered the secret of the star sprinkler.
Sea spray aerosols occur naturally in the salty ocean air, and there’s much more in each of those tiny bursting bubbles than salt. They’re bursting with ocean life, from bacteria to phytoplankton--even viruses. Because sea spray aerosols seed clouds, they affect the climate. With support from the National Science Foundation (NSF), atmospheric chemist Kimberly Prather of the University of California, San Diego, and chemist Vicki Grassian of the University of Iowa are leading a team of scientists around the country who are working to better understand what role sea spray aerosols play in weather and climate change climate models. Part of the National Science Foundation Series “Science Nation.”
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, as a storm approaches, Moko wants to seek shelter beneath a tree on a hill. An old man warns him against staying there, and tells him to return to the village because the tree might suddenly catch fire. On his way, the tree is hit by lightning and bursts into flames. Moko is frightened by the thunderstorm. He thinks that a man who is able to predict such a thing must be a great wizard.
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 thinks that somewhere lies a creature that blows so hard that it makes the boughs of trees quiver and creates the desert dunes. He believes that the clouds flee before the wind comes because they are afraid of the creature. He decides to go look for it. Tired after walking beneath the hot sun, a fresh, light breeze makes his rest more pleasant. However, the creature is actually the Harmattan blowing over West Africa.
Gravity rules the life cycle of stars. During the Red Giant dying stage in the life of an average size star, its outer layers are blown off in vast clouds of dust and gas called "nebulae" that contain hydrogen, oxygen, and nitrogen. Gravity crushes the remaining atoms into a remnant core called a white dwarf. The gravity of giant stars-10 to 20 times larger than average-will, at the end of their life in a supernova explosion, crush together even mutually repulsive protons and electrons, leaving a remnant rotating core of neutrons (i.e., a pulsar). Also explains how stars 20 to 100 times average size collapse into a core so dense that its gravity doesn't even allow light to escape (i.e., a black hole).
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, on that morning, Moko was helping his friend and the other villagers to cut firewood to heat their homes. Snow begins to fall, and Alarick tells Moko that it would be best if they went back inside. But Moko wants to learn the secret of the snow. He heads toward the mountain. At the summit, he sees large trees bending in the wind and clouds of snow swirling around in the sky. As he makes his way back down to the village, the storm blocks his way and he can go no further. Moko begs with the mountain to let him through, promising to tell no one the mountain's secret. The storm calms and Moko returns to the village. When Alarick asks him what he has learned, Moko tells him that the mountain's secret is not one that can be revealed.
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, as they drift away from the iceberg and are throwing their fishing nets, Moko and Alarick's boat is surrounded by a thick fog. Moko thinks this is smoke and that there must be fire. He cannot even see his friend, just hears his voice telling him that a sudden fog on the ocean can last for a long time and that only patience will save them. Moko thinks that he should not have thrown his net so soon and that the ocean is blindfolding them so they won't see which way it is taking them. Gliding along, they hear some strange sounds and see bizarre shapes in the mist. Alarick begins to play his flute and the fog begins to thin. They discover a lovely bay, sheltered from the wind, ideal for fishing. Moko is filled with admiration for his friend who knew how to tame the ocean.
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, Mei-Lei takes Moko to the rice fields. The sky is blue and Moko thinks that in this country there just aren't any clouds. Mei-Lei tells him to wait until nightfall, that the rains will dance over the village. Moko doesn't believe her, there isn't a cloud in sight! Suddenly, the sky darkens and Mei-Lei wants to return to the village, but Moko wants to know more. He climbs the hill behind the village to get a better look at the sky. The wind picks up and a great wave of rain washes everything in its wake. Moko and Mei-Lei take shelter from the monsoon behind a rock. To make the rain stop Mei-Lei starts to sing and dance. Bit by bit the rain subsides and the two friends decide to return to the village. Moko thinks that Mei-Lei's dancing was magical and had the power to stop the rain.
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, it is night time and Moko is watching the shooting stars from Totemie's village and is remembering how he once thought that a lady blew the stars in the sky from the embers of her bonfire. And suddenly, an immense star, a huge ball of fire, appears from the sky and falls to the depths of the forest. Totemie and Moko take off to see where the meteorite has landed and discover that a huge flaming rock has made a hole the size of a volcano's crater in the ground and is setting fire to the forest around it. Totemie is scared that the sky is angry and Moko, who remembers Mei Li begins to dance like she did while playing Alarick's flute. It begins to rain and slowly the flames die down. Moko thinks that the clouds must have seen him dance and heard his flute and come to save his new friend's land.
