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Though the Kyoto Protocol went into effect in February of 2005, it will not be a quick fix: global temperatures are predicted to rise well into this century. This radio broadcast takes a look at some technologies - from wind power to hydrogen fuel cells - that could curb climate change by reducing greenhouse gases. There is discussion about what countries are doing to reduce global warming, such as ... Full description.
Grade level: General public
Resource type: Radio broadcast
Subject: Climatology, Environmental science, Policy issues, Technology
 
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This two-part radio broadcast first focuses on how scientists are re-evaluating their theories on how the Earth was formed, then on exploration for new life forms found in the sediments of ocean floors. By looking at volcanic hotspots, geologists can sample gases from deep inside the mantle of the Earth. These dissolved gases include particles from the solar wind and impacting asteroids. This broadcast ... Full description.
Grade level: General public
Resource type: Radio broadcast
Subject: Geology, Biological oceanography, Space science
 
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Millions of tons of dust are lifted from deserts annually, suspended in the atmosphere, and released to fall on the oceans, but scientists are a long way from understanding the impact of atmospheric dust on the climate and weather systems of Earth or on marine organisms. This radio broadcast explains how the nitrogen, phosphorus and iron released from dust boosts the growth of phytoplankton, which ... Full description.
Grade level: General public
Resource type: Radio broadcast
Subject: Atmospheric science, Climatology, Environmental science, Biological oceanography
 
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This radio broadcast explores the cosmological hypothesis known as the cyclical universe, put forward by Neil Turok and Paul Steinhardt. In a cyclical universe, the Big Bang was not the beginning of time and space but merely a cataclysmic event - one of perhaps millions - that takes place from time to time in our universe. The broadcast describes how higher-dimensional, infinitely large parallel sheets ... Full description.
Grade level: General public
Resource type: Radio broadcast
Subject: Physics, Space science
 
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The Great Rift Valley is a huge gash cut into East Africa, extending 3000 kilometers from Malawi in southern Africa to the Red Sea in the north. Beneath the Great Rift Valley, the next new ocean on Earth may be forming. This radio broadcast ptovides interviews with geologists who are studying this part of Africa to learn how new seas appear. The tectonic plates that form the continents drift continuously ... Full description.
Grade level: General public
Resource type: Radio broadcast
Subject: Geology
 
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Archaea are tiny microscopic organisms that account for a fifth of all life and can be found in just about every habitat on Earth, yet most people have never even heard of them. These extraordinary life forms have been found in volcanic craters and hot springs, underneath the ice sheets of Antarctica and even around thermal vents at the bottom of the ocean. It seems no environment is too tough, too ... Full description.
Grade level: General public
Resource type: Radio broadcast
Subject: Biology, Environmental science, Biological oceanography, Space science
 
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For over 100 years, the idea has been growing that birds are directly descended from dinosaurs. And today, most paleontologists subscribe to that notion. But there are dissenting voices taking issue with the prevailing orthodoxy. Do they have a point? This radio broadcast contains discussion from paleontologists at a site in the Liaoning Province in northeastern China where an extraordinary series ... Full description.
Grade level: General public
Resource type: Radio broadcast
Subject: Paleontology
 
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How did the Moon form? The most favored theory - a cataclysmic impact on our planet - that has dominated scientific thinking for over a quarter of a century has always had its critics. But the final piece of the puzzle may just be in place. This radio broadcast considers new research that could offer the complete picture into the events that led to the creation of our moon. Analysis of moon rocks ... Full description.
Grade level: General public
Resource type: Radio broadcast
Subject: Space science
 
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The very first stars in the universe died a long time before astronomers could get a look at them. Billions of years after the last of these first stars expired, telescopes are finally tracking them down. This radio broadcast uncovers new research into how the transition from dark to light came about. After the Big Bang which established time, space and matter, there was a dark age - a stretch of ... Full description.
Grade level: General public
Resource type: Radio broadcast
Subject: Space science
 
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What force was great enough to wipe from Earth not only the woolly mammoth but all the other megafauna that once roamed the planet, from the saber toothed tiger to the giant sloth? These giant beasts all vanished from the fossil record around the same time, about 15 thousand years ago, at the end of the Pleistocene. Many scientists believe the mass megafauna extinctions were caused by hunting and/or ... Full description.
Grade level: General public
Resource type: Radio broadcast
Subject: Climatology, Human geography, Paleontology
 
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