Monday, April 1, 2013 - 8:15am
Extreme Algal Blooms: The New Normal?
A research team, led by Carnegie’s Anna Michalak, has determined that the 2011 record-breaking algal bloom in Lake Erie was triggered by long-term agricultural practices coupled with extreme precipitation, followed by weak lake circulation and warm temperatures. The team also predicts that, unless agricultural policies change, the lake will continue to experience extreme blooms.
Wednesday, October 10, 2007 - 1:43pm
Senior Trustee William T. Golden Dies at 97
Senior trustee William T. Golden died on Sunday October 7 at the age of 97. Bill Golden was an icon of American science policy, and the Carnegie Institution was privileged to have his support and guidance for more than 35 years.
Monday, April 21, 2008 - 10:56am
Plate Tectonics Meets the Ice Ages in North American Landscapes
Tanya Atwater of the University of California, Santa Barbara, gave the final Capital Science Lecture for the 2007-2008 season on April 17th. Her engaging talk included computer animations, maps, and more to explore the interaction of some of North America’s large-scale topographic features and its many striking landforms. The tectonic features were created over long periods via plate tectonics, while the landforms developed during the recent ice ages. Atwater showed how they have interacted to produce some of the most stunning scenery in this part of the world.
Friday, August 3, 2012 - 10:06am
Supernova progenitor found?
Type Ia supernovae are violent stellar explosions. Observations of their brightness are used to determine distances in the universe and have shown scientists that the universe is expanding at an accelerating rate. But there is still too little known about the specifics of the processes by which these supernovae form. New research led by Carnegie identifies a star, prior to explosion, which will possibly become a type Ia supernova.
Thursday, July 15, 2010 - 8:10am
New Revelations about Mercury’s Volcanism, Magnetic Substorms, and Exosphere from MESSENGER
Analysis of data from MESSENGER’s third and final flyby of Mercury in September 2009 has revealed evidence of younger volcanism on the innermost planet than previously recognized, new information about magnetic substorms, and the first observations of emission from an ionized species in Mercury’s very thin atmosphere or exosphere.
Wednesday, February 6, 2013 - 2:28pm
Forecasting a Supernova Explosion
Type II supernovae are formed when massive stars collapse, initiating giant explosions. It is thought that stars emit a burst of mass as a precursor to the supernova explosion. If this process were better understood, it could be used to predict and study supernova events in their earliest stages. New observations from a team of astronomers including Carnegie's Mansi Kasliwal show a remarkable mass-loss event about a month before the explosion of a type IIn supernova.
Monday, October 29, 2007 - 8:01am
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.
Monday, February 27, 2012 - 4:51pm
Amoeba may offer key clue to photosynthetic evolution
The major difference between plant and animal cells is the photosynthetic process, which converts light energy into chemical energy. When light isn’t available, energy is generated by breaking down carbohydrates and sugars, just as it is in animal and some bacterial cells. Two cellular organelles are responsible for these two processes: the chloroplasts for photosynthesis and the mitochondria for sugar breakdown. New research from Carnegie’s Eva Nowack and Arthur Grossman has opened a window into the early stages of chloroplast evolution.
Monday, July 22, 2013 - 8:26am
First High-resolution National Carbon Map—Panama
A Carnegie-led team of researchers has for the first time mapped the above ground carbon density of an entire country in high fidelity. They integrated field data with satellite imagery and high-resolution airborne Light Detection and Ranging data to map and quantify carbon stocks throughout the Republic of Panama. The results are the first maps that report carbon stocks in areas as small as a hectare (2.5 acres) with the lowest uncertainty of any carbon-counting approach yet.
Friday, February 18, 2011 - 4:23pm
A Solar System Family Portrait, from the Inside Out
The MESSENGER spacecraft has captured the first portrait of our Solar System from the inside looking out. Comprised of 34 images, the mosaic provides a complement to the Solar System portrait – that one from the outside looking in – taken by Voyager 1 in 1990.
Wednesday, August 11, 2010 - 5:08am
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.
Friday, January 18, 2013 - 12:32pm
Studying Ancient Earth’s Geochemistry
Researchers still have much to learn about the volcanism that shaped our planet’s early history. New evidence from a team led by Carnegie’s Frances Jenner demonstrates that some of the tectonic processes driving volcanic activity, such as those taking place today, were occurring as early as 3.8 billion years ago.
Wednesday, July 23, 2008 - 9:53am
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.
Wednesday, June 10, 2009 - 10:03am
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.
Monday, September 24, 2007 - 12:00am
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.
Monday, March 28, 2005 - 1:00am
100 Greatest Discoveries
Carnegie molecular biologist Joseph Gall discusses the work of groundbreaking microscopists, biologists, zoologists, and geneticists with Bill Nye, "The Science Guy," as The Science Channel counts down the greatest science discoveries of our time...
Thursday, May 13, 2010 - 12:00am
Silver Tells a Volatile Story of Earth’s Origin
Tiny variations in the isotopic composition of silver in meteorites and Earth rocks are helping scientists put together a timetable of how our planet was assembled beginning 4.568 billion years ago. The new study, published in the journal Science, indicates that water and other key volatiles may have been present in at least some of Earth’s original building blocks, rather than acquired later from comets, as some scientists have suggested.
Monday, September 10, 2012 - 2:20pm
Forest mortality and climate change: The big picture
Over the past two decades, extensive forest death triggered by hot and dry climatic conditions has been documented on every continent except Antarctica. Forest mortality due to drought and heat stress is expected to increase due to climate change. Although research has focused on isolated incidents of forest mortality, little is known about the potential effects of widespread forest die-offs. A new analysis of the current literature on this topic by Carnegie’s William and Leander Anderegg is published September 9 in Nature Climate Change.
Monday, March 2, 2009 - 3:01pm
Airborne Ecologists Help Balance Delicate African Ecosystem
The African savanna is world famous for its wildlife, especially the iconic large herbivores such as elephants, zebras, and giraffes. But managing these ecosystems and balancing the interests of the large charismatic mammals with those of other species has been a perpetual challenge for park and game mangers. Now a new study published in the Proceedings of the National Academy of Sciences reports the successful test of new remote-sensing technology to monitor the impact of management decisions on the savannah ecosystem.