Tuesday, August 22, 2006 - 11:01am
Canadian diamonds found to be oldest on Earth
Scientists from the Department of Terrestrial Magnetism have determined that diamonds from Canada’s Northwest Territories are the oldest precisely dated diamonds on Earth...
Friday, November 22, 2013 - 1:23pm
Acid raid, ozone depletion contributed to ancient extinction
Around 250 million years ago, at the end of the Permian period, there was a mass extinction so severe that it remains the most traumatic known species die-off in Earth’s history. Some researchers have suggested that this extinction was triggered by contemporaneous volcanic eruptions in Siberia. New results from a team including Director of Carnegie's Department of Terrestrial Magnetism Linda Elkins-Tanton show that the atmospheric effects of these eruptions could have been devastating.
Sunday, July 22, 2007 - 11:00pm
Carnegie’s Dave Mao awarded AGU’s Inge Lehmann Medal
The American Geophysical Union has awarded Carnegie's Ho-kwang (Dave) Mao the Inge Lehmann Medal for "outstanding contributions to the understanding of the structure, composition, and dynamics of the Earth's mantle and core." Mao has been a pioneer in high-pressures physics and related technology development for over 30 years...
Tuesday, February 21, 2012 - 6:44pm
Plant toughness: Key to cracking biofuels?
Along with photosynthesis, the plant cell wall is one of the features that most set plants apart from animals. A structural molecule called cellulose is necessary for the manufacture of these walls. Cellulose is synthesized in a semi-crystalline state that is essential for its function in the cell wall function, but the mechanisms controlling its crystallinity are poorly understood. New research from a team including current and former Carnegie scientists reveals key information about this process, as well as a means to reduce cellulose crystallinity, which is a key stumbling block in biofuels development.
Thursday, November 13, 2008 - 2:00pm
Corralling the carbon cycle
Scientists, including Global Ecology’s Joe Berry, may have overcome a major hurdle to calculating how much carbon dioxide is absorbed and released by plants, vital information for determining the amount of carbon that can be safely emitted by human activities. The problem is that ecosystems simultaneously take up and release CO2. The key finding is that the compound carbonyl sulfide, which plants consume in tandem with CO2, can be used to quantify gas flow into the plants during photosynthesis.
Monday, January 24, 2011 - 6:25pm
Nailing down a crucial plant signaling system
Plant biologists have discovered the last major element of the series of chemical signals that one class of plant hormones, called brassinosteroids, send from a protein on the surface of a plant cell to the cell’s nucleus. Although many steps of the pathway were already known, new research from a team including Carnegie’s Ying Sun and Zhiyong Wang fills in a missing gap about the mechanism through which brassinosteroids cause plant genes to be expressed. Their research has implications for agricultural science and, potentially, evolutionary research.
Tuesday, February 18, 2014 - 7:06pm
Nitrogen-tracking tools for better crops and less pollution
As every gardner knows, nitrogen is crucial for a plant’s growth. But nitrogen absorption is inefficient. This means that on the scale of food crops, adding significant levels of nitrogen to the soil through fertilizer presents a number of problems, particularly river and groundwater pollution. As a result, finding a way to improve nitrogen uptake in agricultural products could improve yields and decrease risks to environmental and human health. New work from Carnegie's Cheng-Hsun Ho and Wolf Frommer developed tools that could help scientists observe the nitrogen-uptake process in real time and could lead to developments that improve agriculture and the environment.
Monday, September 10, 2012 - 6:26am
Carnegie’s Donald Brown Wins Lasker-Koshland Award
Director Emeritus Donald Brown, of Carnegie’s Department of Embryology, receives the prestigious 2012 Lasker-Koshland Special Achievement Award in Medical Science “For exceptional leadership and citizenship in biomedical science–exemplified by fundamental discoveries concerning the nature of genes; and by selfless commitment to young scientists.”
Wednesday, June 18, 2008 - 12:27pm
Researchers Explain Nitrogen Paradox in Forests
Nitrogen is essential to all life on Earth, and the processes by which it cycles through the environment may determine how ecosystems respond to global warming. But certain aspects of the nitrogen cycle in temperate and tropical forests have puzzled scientists, defying, in a sense, the laws of supply and demand. Now scientists from the Carnegie Institution have explained the paradox by recognizing the role of two other factors: temperature and the abundance of another key element, phosphorous.
Saturday, December 20, 2008 - 2:43pm
Carnegie’s Field and Koshland Elected AAAS Fellows
Christopher B. Field, director of Carnegie's Department of Global Ecology, and Douglas E. Koshland, staff scientist at the Department of Embryology, have been elected AAAS Fellows by the American Association for the Advancement of Science. The announcement appears in the News & Notes section of the December19, 2008 issue of Science.
Monday, March 30, 2009 - 9:28am
New Possibilities for Hydrogen-Producing Algae
Photosynthesis produces the food that we eat and the oxygen that we breathe ― could it also help satisfy our future energy needs by producing clean-burning hydrogen? Researchers studying a hydrogen-producing, single-celled green alga, Chlamydomonas reinhardtii, have unmasked a previously unknown fermentation pathway that may open up possibilities for increasing hydrogen production.
Tuesday, February 4, 2014 - 11:43am
Diamond Defect Boosts Quantum Technology
New research shows that a remarkable defect in synthetic diamond produced by chemical vapor deposition allows researchers to measure, witness, and potentially manipulate electrons in a manner that could lead to new “quantum technology” for information processing.
Monday, October 15, 2007 - 1:00pm
Former CASE Director Inés Cifuentes Wins 2007 Hispanic Heritage Award
Former Carnegie Academy for Science Education (CASE) director Inés Cifuentes has won this year’s Hispanic Heritage Award for Math and Science. Instituted by the White House in 1987, the Hispanic Heritage Awards are the most prestigious Hispanic honors in America.
Wednesday, February 9, 2011 - 1:42pm
Delving into manganite conductivity
Chemical compounds called manganites have been studied for many years since the discovery of colossal magnetoresistance, a property that promises important applications in the fields of magnetic sensors, magnetic random access memories and spintronic devices. However, understanding—and ultimately controlling—this effect remains a challenge, because much about manganite physics is still not known. This new research is an important breakthrough in our understanding of the mysterious ways manganites respond when subjected to intense pressure.
Wednesday, January 30, 2008 - 3:32pm
Squeezed Crystals Deliver More Volts Per Jolt
A discovery by scientists at the Carnegie Institution has opened the door to a new generation of piezoelectric materials that can convert mechanical strain into electricity and vice versa, potentially cutting costs and boosting performance in myriad applications ranging from medical diagnostics to green energy technologies.
Thursday, March 14, 2013 - 6:46am
New Cancer Diagnostic Technique Debuts
Cancer cells break down sugars and produce the metabolic acid lactate at a much higher rate than normal cells. This phenomenon provides a telltale sign that cancer is present, via diagnostics such as PET scans, and possibly offers an avenue for novel cancer therapies. Now a team of Chilean researchers and Carnegie’s Wolf Frommer have devised a molecular sensor that can detect levels of lactate in individual cells in real time.
Thursday, May 9, 2013 - 2:14pm
Where on Earth Did the Moon’s Water Come From?
Water is perhaps the most important molecule in our solar system. Figuring out where it came from and how it was distributed within and among the planets can help scientists understand how planets formed and evolved. New research from a team including Carnegie’s Erik Hauri demonstrates that water from the interiors of the Earth and Moon has a common origin.