INDEX CREDITS Sort By: 1-20 of 48| pages: 1 2 3 | Next > Acid Oceans Activity for grades 6 through 12 Since the beginning of the Industrial Age, the ocean has been becoming more acidic. Find out how this change is hampering the development of hard-shelled marine creatures, leaving them more vulnerable to environmental stressors. Webpage More about this Resource Astro Viz: Cassini-Huygens Explores Saturn Article for grades 6 through 12 Saturn's largest moon, Titan, is the last place in the solar system whose surface is a complete mystery. But that will soon change! Track the Cassini spacecraft and its Huygens probe. Webpage More about this Resource Astro Viz: Colliding Galaxies Article for grades 6 through 12 In three billion years, our Milky Way Galaxy will collide with its nearest neighbor, the Andromeda Galaxy. See how these two spiral galaxies are expected to merge, forming an elliptical galaxy. Webpage More about this Resource Astro Viz: Earth's Magnetic Shield Article for grades 6 through 12 Light and heat aren't the only things the Sun emits. Tiny particles also stream away from the star. What threat do these solar winds pose to the Earth's magnetic shield? Webpage More about this Resource Astro Viz: New Horizons Mission to Pluto Article for grades 6 through 12 On January 19, 2006, a spacecraft set out on a decade-long voyage to Pluto and its moons. By studying this "icy dwarf" up close, scientists hope to determine whether Pluto is, in fact, a planet. Webpage More about this Resource Bio Viz: Congo River Article for grades 6 through 12 See how satellite images and new computer techniques helped AMNH scientists create a hypothesis about closely related fish species in the lower Congo river. Webpage More about this Resource Bio Viz: Global Fires 2001-2005 Article for grades 6 through 12 Human activity has changed the frequency, intensity, and patterns of fires around the world. See how these changes in fire regimens are reshaping the face of our planet. Webpage More about this Resource Bio Viz: Global Fires 2002–2008 Article for grades 6 and up Fire is part of natural landscapes around the world, clearing out old vegetation and making way for new growth. But what does it mean when human activity changes natural fire patterns? Webpage More about this Resource Bio Viz: Urban Sprawl: Phoenix Article for grades 6 through 12 Investigate why the population density for Phoenix, Arizona, has increased—by necessity—in recent decades even while the urban area's boundaries have grown more slowly. Webpage More about this Resource Earth Viz: Global Ozone 2004–2008 Article for grades 6 through 12 Since 1980, ozone levels over the Antarctic have dropped by an average of 55 percent. In fact, in October 2008 the ozone hole was the fifth largest on record—11 percent larger than North America. Webpage More about this Resource Earth Viz: Sea Ice 2000–2008 Article for grades 6 through 12 Sea ice changes with the seasons, waxing and waning between maximum extent in late winter and minimum extent in late summer. See how a significant downward trend in sea ice in recent years exceeds predictions. Webpage More about this Resource Earth Viz: Sea Surface Temperature 2006 Article for grades 6 through 12 Examine the cycles of changes in surface temperatures along the equatorial Pacific known as El Niño and La Niña—and how they affect climates across the globe. Webpage More about this Resource Earth Viz: Sea-Surface Temperature Article for grades 6 through 12 Water temperatures at the ocean surface are constantly changing. See how tracking these changes with satellites is helping scientists predict recurring weather patterns, such as El Niño. Webpage More about this Resource Impact! Tracking Near-Earth Asteroids Article for grades 6 through 12 Most space rocks don’t pass anywhere near Earth. Meet the astronomers on wary watch for the ones that do. You’ll see firsthand how they are able to find asteroids in a celestial crowd. Webpage More about this Resource Jellies Down Deep Article for grades 6 through 12 Gelatinous goo, one of the most abundant forms of ocean life, was all but invisible to science until recently. Take an in-depth look at jellies, from the microscopic to the meter-wide "Big Red." Webpage More about this Resource Language in the Brain Article for grades 6 through 12 Why is it that humans can speak but chimpanzees, our closest living relatives, cannot? Find out what scientists have learned about how our brain produces language, and what questions they have yet to answer. Webpage More about this Resource Melting Glaciers: Clues to Climate Change Article for grades 6 through 12 Travel to the Peruvian Andes with a team of glaciologists, who are racing to observe the world's largest tropical ice cap—before global warming melts it away. Webpage More about this Resource MESSENGER: Mission to Mercury Article for grades 6 through 12 Until recently there was 55 percent of Mercury's surface that we had never seen. NASA's January 2008 MESSENGER mission changed that, sending back a complete picture of Mercury and shedding light on its geological history. Webpage More about this Resource Moving Mountains Article for grades 6 through 12 Did you know that weathering down a mountain can make it rise higher? It's true. Learn more about this recently discovered paradox of geology. Webpage More about this Resource PETM: Unearthing Ancient Climate Change Article for grades 6 through 12 Fifty-five million years ago, a sudden, enormous influx of carbon flooded the ocean and atmosphere. See what scientists are learning about this global warming event—and what is says about our planet's future. Webpage More about this Resource 1-20 of 48| pages: 1 2 3 | Next >