John Mulchaey and Yixian Zheng named interim co-presidents

Carnegie Observatories Director John Mulchaey and Carnegie Embryology Director Yixian Zheng jointly will serve in the Office of the President on an interim basis starting January 1, 2018. Their selection as interim co-presidents was a unanimous decision of the Carnegie Board of Trustees. 

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WASHINGTON, D.C. – US2020, a  nationwide network of more than 350 organizations to advance the STEM (Science, Technology, Engineering and Math) fields, chose the DC STEM Network as one of 15 finalists for the STEM Coalition Challenge.  Ninety-two partner networks, working to advance STEM mentoring and learning to underrepresented students, competed.

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Without eyes, ears, or a central nervous system, plants can perceive the direction of environmental cues and respond to ensure their survival. For example, roots need to extend through the maze of nooks and crannies in the soil toward sources of water and nutrients. The various ways that plants guide this branching to take advantage of their environment is of great interest to scientists and of potential use by farmers in need of crops that produce more food with fewer resources.

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How far away is that galaxy? 

Our entire understanding of the Universe is based on knowing the distances to other galaxies, yet this seemingly-simple question turns out to be fiendishly difficult to answer. The best answer came more than 100 years ago from an astronomer who was mostly unrecognized in her time—and last year a Carnegie Observatories summer student made those distance measurements more precise than ever. 

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Astronomers with the Sloan Digital Sky Survey (SDSS), including Carnegie's Johanna Teske, have learned that the chemical composition of a star can exert unexpected influence on its planetary system.

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The Zheng lab studies cell division including the study of stem cells, genome organization, and lineage specification. They study the mechanism of genome organization in development, homeostasis—metabolic balance-- and aging; and the influence of cell morphogenesis, or cell shape and steructure, ...
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The Carnegie Irvine Galaxy Survey is obtaining high-quality optical and near-infrared images of several hundred of the brightest galaxies in the southern hemisphere sky, at Carnegie’s Las Campanas Observatory to investigate the structural properties of galaxies. For more see    http://cgs.obs....
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Coral reefs are havens for marine biodiversity and underpin the economies of many coastal communities. But they are very sensitive to changes in ocean chemistry resulting from greenhouse gas emissions, as well as to pollution, warming waters, overdevelopment, and overfishing. Reefs use a mineral...
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Capital Science Evening Lectures
Carnegie Science, Carnegie Institution, Carnegie Institution for Science, Julia Clarke, University of Texas
Thursday, March 29, 2018 - 6:30pm to 8:00pm

How do we go beyond the bones to bring dinosaurs to life? Dr. Clarke will explain the new toolkits she uses to  study what dinosaurs might have sounded or looked like when they roamed the Earth....

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Capital Science Evening Lectures
Carnegie Science, Carnegie Institution, Carnegie Institution for Science, Oregon State University, Joy Leighton
Wednesday, April 25, 2018 - 6:30pm to 8:00pm

Can we use the ocean without using it up? The task is daunting given current trajectories in fisheries, plastics, and other pollutants, and the impacts of climate change and ocean acidification. ...

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Capital Science Evening Lectures
Carnegie Science, Carnegie Institution, Carnegie Institution for Science, University of Bristol
Wednesday, May 9, 2018 - 6:30pm to 8:00pm

Looking upward, the vastness of the heavens are accessible through giant telescopes that collect light from the beginning of time. Turn a telescope downward and the opaqueness of our planet...

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Geochemist Steven Shirey is researching how Earth's continents formed. Continent formation spans most of Earth's history, continents were key to the emergence of life, and they contain a majority of Earth’s resources. Continental rocks also retain the geologic record of Earth's ancient geodynamic...
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Globular clusters are spherical systems of some 100,000  gravitationally bound stars. They are among the oldest components of our galaxy and are key to understanding the age and scale of the universe. Previous measurements of their distances have compared the characteristics of different types of...
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We are all made of stardust. Almost all of the chemical elements were produced by nuclear reactions in the interiors of stars. When a star dies a fraction of the elements is released into the inter-stellar gas clouds, out of which successive generations of stars form.  Astronomers have a basic...
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January 18, 2018

Washington, DC— Dust is everywhere—not just in your attic or under your bed, but also in outer space. To astronomers, dust can be a nuisance by blocking the light of distant stars, or it can be a tool to study the history of our universe, galaxy, and Solar System.

For example, astronomers have been trying to explain why some recently discovered distant, but young, galaxies contain massive amounts of dust. These observations indicate that type II supernovae—explosions of stars more than ten times as massive as the Sun—produce copious amounts of dust, but how and when they do so is not well understood.

New work from a team of Carnegie cosmochemists published by Science

January 16, 2018

WASHINGTON, D.C. – US2020, a  nationwide network of more than 350 organizations to advance the STEM (Science, Technology, Engineering and Math) fields, chose the DC STEM Network as one of 15 finalists for the STEM Coalition Challenge.  Ninety-two partner networks, working to advance STEM mentoring and learning to underrepresented students, competed. The finalists will compete for $1-million in resources to implement their innovative approaches to STEM teaching and learning.  

The DC STEM Network is a collaboration between the Carnegie Science’s education arm, Carnegie Academy for Science Education (CASE) and the DC Office of the State Superintendent of Education (OSSE). The

Carnegie Science, Carnegie Institution, Carnegie Institution for Science, Stanford University
January 9, 2018

Washington, DC— Without eyes, ears, or a central nervous system, plants can perceive the direction of environmental cues and respond to ensure their survival.

For example, roots need to extend through the maze of nooks and crannies in the soil toward sources of water and nutrients. The various ways that plants guide this branching to take advantage of their environment is of great interest to scientists and of potential use by farmers in need of crops that produce more food with fewer resources.

Carnegie and Stanford University biologist José Dinneny has spent years studying how root growth responds to water, particularly through a phenomenon called hydropatterning, which

January 9, 2018

National Harbor, MD—How far away is that galaxy? 

Our entire understanding of the Universe is based on knowing the distances to other galaxies, yet this seemingly-simple question turns out to be fiendishly difficult to answer. The best answer came more than 100 years ago from an astronomer who was mostly unrecognized in her time—and today, another astronomer has used Sloan Digital Sky Survey (SDSS) data to make those distance measurements more precise than ever. 

"It's been fascinating to work with such historically significant stars," says Kate Hartman, an undergraduate from Pomona College who announced the results at today’s American Astronomical Society (AAS) meeting in

Carnegie Science, Carnegie Institution, Carnegie Institution for Science, Julia Clarke, University of Texas
March 29, 2018

How do we go beyond the bones to bring dinosaurs to life? Dr. Clarke will explain the new toolkits she uses to  study what dinosaurs might have sounded or looked like when they roamed the Earth.

Dr. Julia Clarke: Wilson Professor of Vertebrate Paleontology & HHMI Professor, Jackson School of Geosciences, The University of Texas at Austin

#DinosaurBones

Carnegie Science, Carnegie Institution, Carnegie Institution for Science, Oregon State University, Joy Leighton
April 25, 2018

Can we use the ocean without using it up? The task is daunting given current trajectories in fisheries, plastics, and other pollutants, and the impacts of climate change and ocean acidification.  However, new scientific insights, tools, and partnerships are providing hope that it’s not too late to transition to more-sustainable practices and policies.  Dr. Lubchenco wuill draw on her four years as the Under Secretary of Commerce for Oceans and Atmosphere and the Administrator of the U.S. National Oceanic and Atmospheric Administration (NOAA), her two years as the first U.S. Science Envoy for the Ocean, and her decades of research around the world to summarize the importance to people of

Carnegie Science, Carnegie Institution, Carnegie Institution for Science, University of Bristol
May 9, 2018

Looking upward, the vastness of the heavens are accessible through giant telescopes that collect light from the beginning of time. Turn a telescope downward and the opaqueness of our planet conceals the secrets of its origin and evolution. Diamonds, those translucent rarities, illuminate the depths of our planet and reveal connections between the deep earth and the surface of our planet through both time and space.

Dr. Michael Walter: Incoming Director, Carnegie Geophysical Laboratory

#DiamondScience

Carnegie Science, Carnegie Institution, Carnegie Institution for Science, MIT
June 12, 2018

The direct measurement of gravitational waves predicted by Albert Einstein 100 years ago has open a new field of science – gravitational wave astrophysics and astronomy. The recent discoveries and the prospects for the new field will be presented.

Dr. Rainer Weiss: Emeritus Professor of Physics, MIT, on behalf of the LIGO Scientific Collaboration

#GravitationalWaves

CALL FOR PROPOSALS

Following Andrew Carnegie’s founding encouragement of liberal discovery-driven research, the Carnegie Institution for Science offers its scientists a new resource for pursuing bold ideas.

Carnegie Science Venture grants are internal awards of up to $100,000 that are intended to foster entirely new directions of research by teams of scientists that ignore departmental boundaries. Up to six adventurous investigations may be funded each year. The period of the award is two years,

The Geophysical Laboratory has made important advances in the growth of diamond by chemical vapor deposition (CVD).  Methods have been developed to produce single-crystal diamond at low pressure having a broad range of properties.

The NASA Astrobiology Institute (NAI) Carnegie Team focuses on life’s chemical and physical evolution, from the interstellar medium, through planetary systems, to the emergence and detection of life by studying extrasolar planets, Solar System formation, organic rich primitive planetary bodies, prebiotic molecular synthesis through catalyzing with minerals, and the connection between planetary evolution to the emergence, and sustenance of biology. This program attempts to integrate the sweeping narrative of life’s history through a combination of bottom-up and top-down studies. On the one hand, this team studies processes related to chemical and physical evolution in plausible prebiotic

Carnegie researchers are developing new scientific approaches that integrate phylogenetic, chemical and spectral remote sensing perspectives - called Spectranomics - to map canopy function and biological diversity throughout tropical forests of the world.

Mapping the composition and chemistry of species in tropical forests is critical to understanding forest functions related to human use and climate change. However, high-resolution mapping of tropical forest canopies is challenging because traditional field, airborne and satellite measurements cannot easily measure the canopy chemical or taxonomic variation among species over large regions. New technology, such as the Carnegie

One way to adapt to climate change is to understand how plants can thrive in the changing environment. José Dinneny looks at the mechanisms that control environmental responses in plants, including responses to salty soils and different moisture conditions—work that provides the foundation for developing crops for the changing climate.

The Dinneny  lab focuses on understanding how developmental processes such as cell-type specification regulate responses to environmental change. Most studies have considered the organ or even the whole organism as a single responsive unit and ignore the potential diversity of responses by the various cell-types composing an organism. Dinneny has

Staff astronomer emeritus Eric Persson headed a group that develops and uses telescope instrumentation to exploit new near-infrared (IR) imaging array detectors. The team built a wide-field survey camera for the du Pont 2.5-meter telescope at Carnegie’s Las Campanas Observatory in Chile, and the first of two cameras for the Magellan Baade telescope. Magellan consortium astronomers use the Baade camera for various IR-imaging projects, while his group focuses on distant galaxies and supernovae.

Until recently, it was difficult to find large numbers of galaxies at near-IR wavelengths. But significant advances in the size of IR detector arrays have allowed the Persson group to survey

Erik Hauri studies how planetary processes affect the chemistry of the Earth, Moon and other objects. He also uses that chemistry to understand the origin and evolution of planetary bodies.

The minerals that are stable in planetary interiors determine how major elements such as silicon, magnesium, iron, calcium, aluminum, titanium, sodium and sometimes water are distributed, and how they behave when melting occurs and  when magmas are generated and transported to the surface in volcanoes.

The presence of water, carbon and other so-called volatiles have a large influence on the strength and melting point of planetary interiors. This in turn determines where magmas are

Anat Shahar is pioneering a field that blends isotope geochemistry with high-pressure experiments to examine planetary cores and the Solar System’s formation, prior to planet formation, and how the planets formed and differentiated. Stable isotope geochemistry is the study of how physical and chemical processes can cause isotopes—atoms of an element with different numbers of neutrons-- to separate (called isotopic fractionation). Experimental petrology is a lab-based approach to increasing the pressure and temperature of materials to simulate conditions in the interior Earth or other planetary bodies.

Rocks and meteorites consist of isotopes that contain chemical fingerprints of