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Geotimes
February 2007
Sally Adee |
Escape From Snowball Earth Early Earth didn't do things half-way: It may or may not have ever been a solidly frozen "snowball" in the deep geological past, but it was never a half-frozen ball of slush, according to a new study.   |
Geotimes
December 2005
Naomi Lubick |
Slushball Life Hundreds of millions of years ago, a carapace of ice may have periodically covered the entire planet. New research, however, indicates that microbes seem to have thrived in certain places that they should not have during that time, leading scientists to conclude that the snowball was more slushy than frozen solid. |
Geotimes
August 2006
Jennifer Yauck |
Microbes Reshuffle Earth's Early History Previously, scientists used microfossil evidence to date the earliest eukaryotes to about 1.8 billion years old, and the earliest cyanobacteria to about 2.1 billion years old. Now, geologists present new evidence suggesting both types of organisms existed as early as 2.45 billion years ago. |
Geotimes
December 2003
Sara Pratt |
Cool Cambrian triggers life A controversial hypothesis put forth by a team of German researchers says the Cambrian explosion -- the momentous increase in biodiversity 542 million years ago that spawned most modern animal groups -- was caused by life itself. |
Geotimes
April 2005
Sara Pratt |
Space Dust and Snowball Earth Within the spiral arms of the Milky Way galaxy are thousands of giant clouds of dust. Some researchers now say that these clouds collide with Earth every 140 million years, possibly explaining the causes of two distinct periods of widespread glaciation in the planet's geologic past. |
Geotimes
April 2005 |
Geomedia Arctic Climate Change in Photos... Book review: Frozen Earth: The Once and Future Story of Ice Ages by Doug Macdougall... Mapping Sinkhole Risk in Maryland... |
HHMI Bulletin
Winter 2013
Nicole Kresge |
The Past, Present, and Future Earth What does the 4.6 billion year history of Earth tell us about our modern planet? About 150 Washington, D.C., area high school students and 15 teachers from around the United States learned the answers to these questions at the 2012 HHMI Holiday Lectures on Science. |
Science News
April 8, 2000 |
Trilobites to Go Extinct even before dinosaurs existed on Earth but extensively preserved in the fossil record... |
Scientific American
September 2008
David Appell |
The Sun Will Eventually Engulf Earth--Maybe Researchers debate whether Earth will be swallowed by the sun as it expands into a red giant billions of years from now |
Geotimes
July 2007
Carolyn Gramling |
X-ray Eyes in the Sky Scientists are working on the next generation of low-orbiting satellites that they hope will see far past the Earth's surface and into its interior, to better understand the structure and composition of Earth's crust, mantle and core. |
Chemistry World
February 13, 2014
Simon Poulton |
The Earth as a cradle for life This enjoyable book by Stacey and Hodgkinson takes a long-term view of Earth's development as a habitable planet, incorporating physical, chemical and biological processes on the early Earth, to the modern world. |
Geotimes
June 2004
Sara Pratt |
Why the Wobble? A new study says that the shifting of masses of water and ice around the globe's surface primarily drives the seasonal wobbleon its axis. The finding could lead to new ways to monitor global change. |
Salon.com
June 29, 2001
Suzy Hansen |
We've got company Astronomer David Darling talks about the controversial science of astrobiology and the near-certainty that extraterrestrial life forms exist in our solar system... |
Science News
January 5, 2008 |
Science Safari: Focus on Our Planet The United Nations website to show communities how they can promote sustainable use of Earth's resources. |
IEEE Spectrum
August 2006
Stephen Cass |
Summer Reading Hollow Earth: The Long and Curious History of Imagining Strange Lands, Fantastical Creatures, Advanced Civilizations, and Marvelous Machines Below the Earth's Surface by David Standish... Kids to Space: A Space Traveler's Guide by Lonnie Jones Schorer... etc. |
Science News
September 3, 2005 |
Changing Earth Developed by the Smithsonian Institution's National Museum of Natural History, this Web site focuses on Earth's history. |
Geotimes
January 2004
Cynthia Martinez |
Earth Science Week in the Limelight The sixth annual Earth Science Week, held Oct. 12-18, promoted understanding and appreciation of the value of earth science research and its applications and relevance to our daily lives. |
Geotimes
January 2007
Edward Derbyshire |
International Collaboration in Global Science: Price or Prize? The UN triennium 2007 - 2009 International Year of Planet Earth aims to contribute to the improvement of everyday life, especially in less-developed countries, and by promoting the societal potential of the world's earth scientists. |
Geotimes
February 2004
Edward C. Roy Jr. |
Assessing Earth Science in Texas In Texas, a group of geoscientists is fighting to restore earth science to the core curriculum of the state's high schools. |
AskMen.com
Brantley Oakey |
How To Do A Debt Snowball The best way to reduce your debt is through a debt snowball, and here is how you can make one. |
