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This radio broadcast discusses creatures that thrive on natural deep sea asphalt flows in the Gulf of Mexico. The chemosynthetic animals living on the sea floor include worms, mussels and clams. Also covered is salt tectonism and how the creation of asphalt flows is a process not yet understood. This segment is 14 minutes in length. A second broadcast on the cicada emergence in parts of the United ... Full description.
Grade level: General public
Resource type: Radio broadcast
Subject: Biology, Geology, Biological oceanography
 
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These two radio broadcasts discusse new evidence supporting the existence of dark energy from the Chandra X-ray Observatory and Darwin and his theory of evolution. First, The new observatory data from measured distances between galactic clusters suggest the universe started accelerating 6 billion years ago and that the amount of dark energy - the mysterious repulsive force that appears to be pushing ... Full description.
Grade level: General public
Resource type: Radio broadcast
Subject: Biology, Educational theory and practice, Physics, Space science
 
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This 46 minute radio broadcast discusses the NASA announcement in March 2004 that the rover Opportunity explored a crater on Mars that was once soaked with water - the most convincing evidence yet of a warm, wet past on Mars. Though the question of whether that water may have supported life remains, it certainly improves the odds. The second part of the broadcast discusses genetically engineered organisms. ... Full description.
Grade level: General public
Resource type: Radio broadcast
Subject: Biology, Space science
 
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This 47 minute radio broadcast discusses the Gravity Probe B mission, which tests the general theory of relativity. Four ultra-high-precision gyroscopes on board the craft are looking for evidence of the warping of space by the mass of Earth as the craft orbits some 400 miles above Earth. Was Einstein right? The mission has been over 40 years in the making, and has cost 700 million dollars. The show ... Full description.
Grade level: General public
Resource type: Radio broadcast
Subject: Environmental science, Physics
 
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In this 47-minute radio broadcast, cosmologists discuss what they are learning about dark energy and the nature of the universe. Most astronomers believe that the universe began with an infamous Big Bang. But will the universe go out in a Big Rip or a Big Crunch? And when might it happen? Recent pictures from the Hubble Space Telescope (HST) are helping cosmologists figure out how the universe might ... Full description.
Grade level: General public
Resource type: Radio broadcast
Subject: Biological oceanography, Space science
 
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This 47-minute radio broadcast discusses a report by biologists that the types of trees in the inner Amazon rainforest are changing. Increasingly, they've found, larger, faster-growing tree species are crowding out smaller slower tree types - even in areas that have not yet been touched by logging or fires. The researchers suggest that increased carbon dioxide levels could be to blame. The second ... Full description.
Grade level: General public
Resource type: Radio broadcast
Subject: Biology, Environmental science, Paleontology
 
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This 47 minute radio broadcast speculates what New York City might be like in the year 2050, after a century of human-induced climate change. What could a warming planet mean for this city and its people? Plus, can taking action towards sustainable design - from green office buildings to living roofs - ensure a better future for the Big Apple? The show discusses how city planners and scientists use ... Full description.
Grade level: General public
Resource type: Radio broadcast
Subject: Climatology, Environmental science
 
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This site contains three radio broadcasts discussing: the Parkfield, California earthquake of October 2004; the Mount Saint Helens volcano; and the shortage of flu vaccine in 2004. The 15 minute Parkfield broadcast explains how the Parkfield earthquake was the most monitored earthquake in history. Scientists are studying the San Andreas Fault in the area. Data collected from the recent earthquake ... Full description.
Grade level: General public
Resource type: Radio broadcast
Subject: Geology, Geophysics, Natural hazards
 
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Dunes in the desert can make awesome noises like the sounds of faraway drums and marching armies. Scientists are studying what properties of the sand cause these booms. The clip is 2 minutes in length. Full description.
Grade level: General public
Resource type: Radio broadcast
Subject: Physical geography
 
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Some scientists say the universe is 10 billion years old; others say it is 20 billion. The problem is that different methods of measuring give different answers. This radio broadcast considers 2 methods: determining the age of stars; and determining the speed and distance of stars. The conflict in the two methods points to possible problems in the theory of the expanding universe or the lifetime of ... Full description.
Grade level: General public
Resource type: Radio broadcast
Subject: Space science
 
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Results 11 - 20 of 98 <<  1 2 3 4 5 6  >>