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Geotimes March 2005 Sara Pratt |
Rocky Debate Over Early Life Scientists fail to replicate a 1996 study on 3.85-billion-year-old rocks that pushed back the date of the earliest evidence for life on Earth by several hundred million years. |
Geotimes September 2005 Sara Pratt |
Sourcing Ultradeep Diamonds Mineral impurities in a diamond may decrease the gem's value for jewelers, but for geologists they can prove to be priceless: South African diamonds containing garnet have recently provided evidence that very deep diamonds can form from surface materials. |
Smithsonian December 2006 Cate Lineberry |
Diamonds Unearthed In the first installment of a multi-part series, Smithsonian diamond expert Jeffrey Post, curator of the National Gem and Mineral Collection, explains how the rare crystals form. |
Chemistry World July 22, 2011 David Bradley |
Cracking diamonds reveals continental origins An analysis of the mineral inclusions in diamonds dredged up by eruptions from deep within the Earth has allowed scientists to get a handle on when the process of plate tectonics began. |
Chemistry World December 4, 2013 James Urquhart |
Diamonds' redox reaction origins revealed Subduction zones -- boundaries between tectonic plates where the Earth's crust sinks into the hot mantle -- could be breeding grounds for diamond formation, according to Russian researchers. |
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 September 2003 Sara Pratt |
Zircons reveal mantle evolution A team of Finnish geologists has discovered 3.1 billion-year-old zircons in the Jormua ophiolite of eastern Finland. Although not the oldest zircons on Earth, the Jormua zircons are the oldest yet found in mantle rocks. Their discovery has given scientists a brief glimpse into the history of early plate tectonics. |
Geotimes October 2006 |
Geocatastrophes Catastrophe and Opportunity in an Ancient Hot-House Climate... When the Mediterranean Dried Up: Forensics of a Geocatastrophe... The Great Death: Redefining a Mass Extinction... |
Chemistry World August 28, 2015 Andy Extance |
'Fire fountain' data illuminate lunar history The most precise measurements yet of carbon present in volcanic glass samples found on the Moon suggest that the 'fire fountain' lava explosions that formed them were propelled by carbon monoxide. |
Geotimes November 2007 Carolyn Gramling |
How Does Your Continent Grow? Data from ancient mantle rocks are helping to shore up the hypothesis that the continental crust was extracted in pulses, during periodic large melting events in the mantle. |
Chemistry World May 31, 2011 Manisha Lalloo |
Hard x-rays to watch chemical reactions Researchers at the ESRF synchrotron at Grenoble, France, produced hard x-rays to look beneath the surface of materials made of lighter elements |
Geotimes July 2005 Megan Sever |
Carbon Leaching Out of Siberian Peat New research is showing that as temperatures rise across the Arctic, carbon once locked up in permafrost soils may begin escaping into the area's waterways. |
Geotimes February 2004 Sara Pratt |
Fire cooks rock clocks A new field study has confirmed what models had previously predicted: The intense heat of wildfires can reset the helium "clock" in rocks, making them appear younger than they are. |
Geotimes May 2007 Hope Jahren |
Geologists Weigh in on Diet and Disease Geoscientists can play a special role in contributing to medical research, using the integrative systems-based approaches pervasive to earth science. |
Chemistry World May 28, 2014 Ian Randall |
Earth's earliest continent formed like Iceland The Earth's first continents may have formed in a geological setting similar to modern-day Iceland, according to the geochemical analysis of a newly discovered rock unit from Canada. |
Chemistry World January 14, 2014 Ian Randall |
Early start for plate tectonics Subduction of the Earth's crust -- and modern-day plate tectonics -- may have begun as early as the Hadean Eon, 4.4 billion years ago, according to a new study led by researchers from Australia. |
Chemistry World May 26, 2009 Hayley Birch |
A concrete solution to climate change? A better understanding of how carbon dioxide is absorbed by concrete could help scientists accelerate absorption processes and offset a greater proportion of the emissions from cement production |
Geotimes December 2003 Sara Pratt |
Super-hard graphite Compressed graphite does not become diamond, but instead becomes a "super-hard" form of graphite. The new material has many potential industrial applications, for example as a structural component or perhaps for use in high-pressure scientific instruments. |
Chemistry World December 22, 2011 Laura Howes |
Artificial hips glide on graphite Metal-on metal hip replacements are lubricated by a layer of graphite, say scientists in the US. |
Science News May 9, 2009 |
Science Past From The Issue Of May 9, 1959 Scientists predict 25% increase in carbon dioxide by the year 2000. |
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. |
Chemistry World March 2006 Katie Gibb |
Extreme Analysis High pressures, cold temperatures and inaccessible samples all make analytical work challenging for chemists. Science still has a lot to gain from studying and working in extreme environments. |
Chemistry World November 2007 Simon Hadlington |
Solving an Ancient Puzzle Analytical chemistry is revolutionizing archaeological study - as well as igniting some controversy |
Chemistry World November 2010 |
Carbyne and other myths about carbon Harry Kroto gets hot under the collar on the subject of so-called carbyne |
Geotimes March 2003 S. Julio Friedmann |
Storing Carbon in Earth Carbon sequestration is capturing carbon dioxide, either from the atmosphere or emission streams, and storing it in reservoirs, such as plants or soils. Carbon dioxide could be converted to solid chemicals or injected into the deep ocean. Though there are risks, the potential pay-off is enormous. |
Chemistry World August 13, 2013 Simon Hadlington |
New evidence for room temperature graphite superconductivity leaves experts unconvinced Researchers in Germany have presented further evidence for room temperature superconductivity in regions of graphite samples. Other experts, however, remain cautious about the interpretation of the measurements. |
Chemistry World September 24, 2012 Simon Hadlington |
Raised eyebrows greet graphite superconductivity claim Can graphite treated merely with water become a superconductor at room temperature? This is the extraordinary claim made by scientists in Germany. |
Chemistry World March 5, 2012 James Urquhart |
Simulating Your Way to a Better Supercapacitor Researchers have used computer simulations to elucidate how supercapacitors are able to store electric charge. |
Geotimes December 2004 Jay Chapman |
Carbon Dioxide Alchemy Some scientists are experimenting with a new form of alchemy, not looking to create a substance, but rather remove one: carbon dioxide. If their process works, it could reduce the effects of the greenhouse gas in the atmosphere. |
Popular Mechanics February 23, 2009 Andrew Moseman |
Can NASA's New Climate Detective Find the Missing CO2? Early Tuesday morning, a Taurus XL rocket will ferry a CO2 sniffing satellite, the Orbiting Carbon Observatory, into space, where it will try to unlock secrets of Earth's carbon cycle. |
Geotimes May 2004 Sara Pratt |
Ocean Anoxia Researchers are using microfossils to date ocean anoxic events, or severe oxygen depletion in the ocean, back to 132 million years ago. The findings will open up several new avenues of inquiry including the impact of the global carbon cycle perturbation on the biosphere as a whole. |
Chemistry World November 19, 2014 Rebecca Trager |
Watching carbon dioxide's globetrotting New high-resolution simulations depicting how local geography affects the transport of carbon dioxide in the Earth's atmosphere have been created by NASA. |
Chemistry World February 26, 2008 Lewis Brindley |
Your Hair Knows Where You've Been From a single strand of hair, scientists can now determine where a person has been living recently. |
Chemistry World January 28, 2009 Nina Notman |
Iron helps oceans capture more carbon A team of international scientists studying the role of iron in the storage of carbon under the ocean have confirmed that natural iron fertilisation increases the rate of carbon capture. |
Chemistry World May 9, 2013 Emma Stoye |
Understanding defects in graphene The products of thermally exfoliating graphite oxide to make graphene are much more complex than previously thought, new research shows. |
Chemistry World December 2, 2010 Laura Howes |
Nanotube material retains bounce at extreme Carbon nanotubes can make a rubber like material that remains usable in a temperature range of over one thousand degrees. |