Tuesday, April 15, 2014 - 4:09pm
Drought hormones measured
Floods and droughts are increasingly in the news, and climate experts say their frequency will only go up in the future. As such, it is crucial for scientists to learn more about how these extreme events affect plants in order to prepare for and combat the risks to food security that could result. New work from Carnegie will allow researchers, for the first time, to measure the levels of a plant hormone involved in responses to drought stress in individual plant cells in real time.
Friday, December 19, 2008 - 12:35pm
Carnegie Wins Grant to Preserve Historic Photos
The Carnegie Institution has been awarded a $9,400 grant from the Center for History of Physics, American Institute of Physics, to preserve and enhance access to a collection of historic photographs of scientific instruments and apparatus in the archives of the Department of Terrestrial Magnetism (DTM). The collection spans five decades from 1904 to the 1950s and includes thousands of images important to the history of geophysics, atomic physics, and astronomy.
Wednesday, June 10, 2009 - 9:03am
Surprise: Typhoons Trigger Slow Earthquakes
Scientists have made the surprising finding that typhoons trigger slow earthquakes, at least in eastern Taiwan. Slow earthquakes are non-violent fault slippage events that take hours or days instead of a few brutal seconds to minutes to release their potent energy. The researchers discuss their data in a study published in the June 11, issue of Nature.
Thursday, April 12, 2012 - 5:12pm
Probing hydrogen under extreme conditions
How hydrogen--the most abundant element in the cosmos--responds to extremes of pressure and temperature is one of the major challenges in modern physical science. Moreover, knowledge gleaned from experiments using hydrogen as a testing ground on the nature of chemical bonding can fundamentally expand our understanding of matter. New work from Carnegie scientists has enabled researchers to examine hydrogen under pressures never before possible.
Wednesday, December 19, 2012 - 11:08am
Closest Sun-like star may have planets
An international team of scientists, including Carnegie’s Paul Butler, has discovered that Tau Ceti, one of the closest and most Sun-like stars, may have five planets. At a distance of twelve light years and visible with a naked eye in the evening sky, Tau Ceti is the closest single star with the same spectral classification as our Sun. Its five planets are estimated to have masses between two and six times the mass of the Earth--making it the lowest-mass planetary system yet detected.
Wednesday, August 11, 2010 - 4:08am
Arctic Rocks Offer New Glimpse of Primitive Earth
Scientists have discovered a new window into the Earth's violent past. Geochemical evidence from volcanic rocks collected on Baffin Island in the Canadian Arctic suggests that beneath it lies a region of the Earth's mantle that has largely escaped the billions of years of melting and geological churning that has affected the rest of the planet. Researchers believe the discovery offers clues to the early chemical evolution of the Earth.
Thursday, February 13, 2014 - 12:00am
News briefing: Global warming’s record-setting pace
The pace of global warming over the last century has been about twice as rapid over land than over the oceans and will continue to be more dramatic going forward if emissions are not curbed. According to an analysis of 27 climate models by Carnegie’s Chris Field, if we continue along the current emissions trajectory, we are likely facing the most rapid large climate change in the last 65 million years. This will clearly pose great challenges for a variety of terrestrial ecosystems.
Tuesday, July 26, 2011 - 2:41pm
Reforestation’s Cooling Influence--A Result of Farmers' Past Choices
Decisions by farmers to plant on productive land with little snow enhances the potential for reforestation to counteract global warming, concludes new research from Carnegie’s Julia Pongratz and Ken Caldeira. Previous research has led scientists and politicians to believe that regrowing forests on Northern lands that were cleared in order to grow crops would not decrease global warming. But these studies did not consider the importance of the choices made by farmers in the historical past.
Monday, October 29, 2007 - 7:01am
Mellon Awards Carnegie Grant for Ecological Monitoring in South Africa
The Andrew W. Mellon Foundation awarded a $750,000 grant to the Carnegie Institution’s Department of Global Ecology for an intensive pilot study of ecosystem diversity in South Africa’s Kruger National Park. This research will contribute to the park’s “adaptive management” program, which uses science to improve the chances that the park’s ecosystems, including their complex vegetative and animal populations, are sustained into the future.
Tuesday, November 11, 2014 - 1:53pm
Tail discovered on long-known asteroid
A two-person team of Carnegie's Scott Sheppard and Chadwick Trujillo of the Gemini Observatory has discovered a new active asteroid, called 62412, in the Solar System's main asteroid belt between Mars and Jupiter. It is the first comet-like object seen in the Hygiea family of asteroids. Active asteroids are a newly recognized phenomenon. 62412 is only the 13th known active asteroid in the main asteroid belt. Sheppard and Trujillo estimate that there are likely about 100 of them in the main asteroid belt, based on their discovery.
Wednesday, April 17, 2013 - 9:29am
Reproductive tract secretions elicit ovulation
Eggs take a long time to produce in the ovary, and thus are one of a body’s precious resources. It has been theorized that the body has mechanisms to help the ovary ensure that ovulated eggs enter the reproductive tract at the right time in order to maximize the chance of successful fertilization. New research from Carnegie's Allan Spradling and Jianjun Sun has shed light on how successful ovulation and fertilization are brought about by studying these processes in fruit flies. They found that secretions from special glands within the fruit fly’s reproductive tract contribute to both ovulation and sperm function, and that this secretion is controlled by a specific hormone receptor gene, called Hr39. Their results suggest that Lrh-1, a mammalian receptor gene closely related to Hr39, also regulates ovulation by controlling reproductive tract secretions in mammals.
Thursday, August 12, 2010 - 8:55am
Asteroid Found in Gravitational “Dead Zone”
There are places in space where the gravitational tug between a planet and the Sun balance out, allowing other smaller bodies to remain stable called Lagrangian points. So-called Trojan asteroids have been found in some of these stable spots near Jupiter and Neptune. Now Scott Sheppard at the Carnegie’s Department of Terrestrial Magnetism and Chad Trujillo have discovered the first Trojan asteroid in a difficult-to-detect stability region at Neptune—the Lagrangian L5 point.
Sunday, September 23, 2007 - 11:00pm
Scientists discover how cancer may take hold
A team, led by researchers at the Carnegie Institution, has found a key biochemical cycle that suppresses the immune response, thereby allowing cancer cells to multiply unabated. The research shows how the biomolecules responsible for healthy T-cells, the body’s first defenders against hostile invaders, are quashed, permitting the invading cancer to spread. The same cycle could also be involved in autoimmune diseases such as multiple sclerosis.
Thursday, March 2, 2006 - 11:01am
Wesley T. Huntress Congressional Testimony
Carnegie Institution Geophysical Laboratory director Wesley T. Huntress expressed concerns about the future of America’s Earth and space science in testimony before Congress...
Tuesday, April 4, 2006 - 11:01am
Gene mutation causes lethally low-fat diet
Researchers from the Carnegie Institution and the University of Pennsylvania have found a specific gene malfunction that could be responsible for diseases that limit the ability to absorb lipids...
Wednesday, January 9, 2013 - 7:57pm
Preventing Climate Change: The Size of the Energy Challenge
In 2004 a very popular study aimed to address climate change by deploying wedges of different existing energy technologies or approaches. According to the study by Robert Socolow and Stephen Pacala, each wedge would avoid one billion tons of carbon (1 GtC) emissions per year after 50 years. The study showed that, at that time, seven wedges could stabilize carbon dioxide emissions relative to what would happen if things remained “business-as-usual.” A new perspective paper from a group including Carnegie’s Ken Caldeira uses the wedge approach to estimate the size of the energy challenge posed by climate change today.
Wednesday, July 23, 2008 - 8:53am
DTM’s Richard Carlson to Receive 2008 N. L. Bowen Award from AGU
Carnegie geochemist Richard Carlson will receive the 2008 Norman L. Bowen Award from the American Geophysical Union. Named in honor of pioneering experimental petrologist and long-time Geophysical Laboratory staff member Norman Bowen, the award is given annually for outstanding contributions to volcanology, geochemistry or petrology.
Tuesday, January 22, 2008 - 10:58am
Carnegie’s Stephen Shectman receives Jackson-Gwilt Medal
The Royal Astronomical Society has awarded Stephen Shectman of the Carnegie Observatories the 2008 Jackson-Gwilt Medal for his exceptional work in developing astronomical instrumentation and in constructing telescopes.
Wednesday, April 6, 2011 - 12:57pm
Under pressure: germanium
Although its name may make many people think of flowers, the element germanium is part of a frequently studied group of elements, called IVa, which could have applications for next-generation computer architecture as well as implications for fundamental condensed matter physics. New research reveals details of the element’s transitions under pressure. Their results show extraordinary agreement with the predictions of modern condensed matter theory.