A headshot style photograph of Jaroslaw, Jarek, in a black suit in front of a black backdrop. He is wearing a polka dot tie and red pocket square and half-smiling into the camera.

What were you doing before you came to the NSF?

I am currently a Staff Scientist at Los Alamos National Laboratory  (LANL) in Los Alamos in NM, and also an Adjunct Professor at Department of Chemical Engineering at UC Davis. In general, my area of scientific expertise covers using neutron and x-ray scattering to investigate nano- and meso-structures, including bio-interfaces (lipid membranes, interaction of membranes with bio-toxins, Langmuir-Blodgett monolayer films films and living cells) and soft-matter systems (polymers, etc.) in different environments. At LANL I was also involved in many aspects of solid-state physics and science connected with national security and actinides properties. I am currently an American Physical Society (APS) and Neutron Scattering Society of America (NSSA) Fellow.

What attracted you to work for the NSF?

I was interested to explore new career avenues as well as to use my experience to influence science outside the lab.

What was your first impression of the NSF? Has this impression changed since you began serving as a rotator?

My first impression was that NSF is a well-functioning institution with a friendly working environment and well-deserving of its impressive reputation. The organization has a clearly established mission, well-trained personnel, and extremely nice people all around. My first impression has only changed in that these observations have become even more evident over time!

What personal goals would you like to accomplish while at the NSF?

I would like to use my time at NSF to learn how science is supported from the view of a funding agency. I am interested to see the ways NSF uses to get to know the community we support  and to understand their scientific needs. I hope to obtain a more global picture of how federal agencies like NSF work and use this information to develop connections and knowledge. I also hope to visit the scientific places NSF supports and to better understand the scientific outcomes of the funded research..

What has surprised you most about working at the NSF?

That such tremendous work is done is such short time and with such efficiency. I have been continually impressed by the tight connection between the science communities and NSF Program Directors who support them. I have also been impressed at the huge spectrum of expertise, experiences, and ideas of the NSF staff.

What are some of the challenges of serving as a rotator?

I have to admit that the beginning was rather overwhelming: to learn so many new things in a short time (the panel season was approaching when I started) and to deal with/memorize/try to understand the science described in the proposals while knowing that any decision might be consequential for science. I was fortunate to have the support of my fellow Program Directors through this time and have learned so much.

What would you tell someone who is thinking about serving as a Program Director at the NSF?

It is a tremendously rewarding job but a lot different from regular activities of a scientist. It is a job well-suited for people who have a lot of experience in the scientific community and know their science well – I still find myself needing to learn many things at NSF despite my 20+ years’ experience as a scientist.

When friends or colleagues find out that you work at the NSF, what do they say or ask?

My friends and family, even those not as familiar with the extent of NSF’s work, are very impressed and think that working at NSF is very noble.


An outline of a moving truck with "MCB IS MOVING" on the side.


building 1 building 2

(Left) A photograph of NSF’s building in the Ballston area of Arlington, Virginia

(Right) NSF’s new offices in Alexandria, Virginia

As you may have heard, the National Science Foundation is relocating to Alexandria, Virginia. The physical transition is occurring over a six-week period, and this week the time has arrived for BIO (including MCB) to make the move.  Our last day in Ballston will be Thursday, September 14th and we will begin operations in the new building on Monday, September 18th. Our phone numbers and emails will remain the same, but we ask that you remain patient as we may be slower to answer messages or calls over the next few days. Effective October 2, our new mailing address will be:

National Science Foundation

2415 Eisenhower Avenue

Alexandria, VA 22314 

For more information read important notice 139; for IT- related questions email the Help Desk at


Crowdfunding as a way of raising money to support worthy causes is popular among charities and entrepreneurs, and recently has been gaining traction in scientific communities as a novel way to collect support and financing for research projects. The Georgia Institute of Technology is organizing a workshop in Alexandria, VA, on Oct.10. Titled “The Role of Crowdfunding in the STEM Ecosystem”. The goal of the MCB funded (MCB – 1745230) workshop is to stimulate conversation and provide an exchange of ideas about crowdfunding in the sciences.  Chaired by Dr. Morris Cohen, Assistant Professor at Georgia Tech School of Electrical and Computer Engineering and former AAAS Fellow at NSF, the workshop is open to the public and free to all attendees.

The workshop will feature a wide range of expert speakers giving presentations, panel discussions, audience question-and-answer sessions, and three “fireside chats.” Workshop topics will include:

  • Reflections from scientists who have used crowdfunding;
  • Legal and financial implications for crowdfunding campaigns;
  • Crowdfunding factors that may lead to inclusion or exclusion within the STEM community;
  • Crowdfunding platforms in the academic sector;
  • Crowdfunding platforms in the private sector; and
  • Future directions for crowdfunding in science.

The workshop will also address scientific studies of crowdfunding as a social phenomenon, as well as application of crowdfunding in the STEM environment. Additionally, there will be opportunities to meet fellow scientists interested in crowdfunding and initiate dialogues on topics of concern.

The workshop will take place October 10, 2017 from 8:30 AM to 5:00 PM at the Holiday Inn Carlyle at 2460 Eisenhower Ave, Alexandria, VA. More information can be found at Georgia Tech’s workshop website including an agenda, speakers’ bios, and registration information. Registration is free but space is limited, so if you are interested, sign up today!


Questions? Email the organizers at



MCB celebrating Dr. Warr’s Retirement
Upper photo: (Left to Right) Dr. Theresa Good, Dr. Casonya Johnson, Dr. Arcady Mushegian, Dr. Gregory Warr, Dr. Charlie Cunningham, Dr. Steven Clouse, Dr. Michael Weinreich, Dr. Devaki Bhaya
Lower Photo: (Left to Right) Ann Larrow, David Barley, Valerie Maizel, Kelly Ann Parshall, Dr. Gregory Warr, Philip Helig, Dr. Reyda Gonzalez-Nieves, Dr. Stacey Kelley, Lourdes Holloway


MCB recently gave a congratulatory sendoff to Dr. Gregory Warr, who has retired from NSF after 10 years of dedicated service. Dr. Warr started at NSF in 2007, serving for a short period as a Program Director in the division of Integrative Organismal Systems (IOS) before transferring to MCB, where he served as a Program Director and cluster leader for Cellular Dynamics and Function (CDF). During his tenure in MCB, Dr. Warr also temporarily served as acting Division Director, bringing his dedication for quantitative methods into his work as an MCB leader.

Dr. Warr was a strong advocate of MCB’s emphasis on quantitative, predictive and theory-driven science and this was well reflected in the portfolio developed in the CDF cluster, where projects emphasized quantitative approaches and modeling. Dr. Warr’s advocacy has also had effects across MCB. According to Dr. Karen Cone, Acting Deputy Division Director, one of his most important contributions to MCB was “his recognition, early on, that the Division was supporting many projects using network analysis to understand regulatory processes, but these projects were dispersed across the existing three clusters.  His insights helped spur creation of a new cluster, Networks and Regulation, which eventually was re-named the Systems and Synthetic Biology Cluster and supports a portfolio of vibrant projects well-grounded in quantitative and predictive science.”

Dr. Warr’s droll sense of humor will be sorely missed, but his influence on how the Division operates will continue. Dr. Theresa Good, Acting Division Director, says, “I appreciate both his ability to see strategically what was happening in the Directorate and Foundation and [to] act in ways that strengthened the Division, and his skill in enabling people who work with him to grow. Greg sought out the best people to have working with him, so that the Division could benefit from their expertise. He was a true intellectual and scholar with a wide range of interests far beyond just the science we fund.”

MCB thanks Dr. Warr for his hard work and dedication to the Division and MCB science. We will also miss his inspiring 6 AM gym schedule and ability to point out the silly absurdities in our everyday lives. Dr. Charles Cunningham, fellow Program Director and longtime friend, says that he will most miss two things: “Firstly, having been in MCB for 10 years or so, there was little he did not know when it came to process, so he was this great fund of information. Second, our chats about science, politics and home, especially over a curry and a glass of something refreshing at the Bombay Club in DC.”




A spotlight illuminates the words 'Spotlight on MCB-funded Science.'

Photo Credit: Matusciac Alexandru/

Sharing MCB Science is one of our six blog themes where you can learn about exciting MCB-funded research submitted by our investigators (via this webform). We greatly appreciate the overwhelmingly positive response of the MCB scientific community and have received many more submissions than can be featured in long form on the blog. Enjoy this shorter spotlight of submissions we have received!

a closeup of a cell, it is shapes like a lollypop, a long thin stalk with a rounded top which is darker in color

Joseph K. E. Ortega – Photograph of a stage IV sporangiophore of Phycomyces blakesleeanus with the micro-capillary tip of a pressure probe.

Algal, fungal, and plant cells interact with their environment by regulating their size and shape through expansive growth, an increase in cell volume due predominately to an increase in water uptake. This process presents a special challenge for algae, fungi, and plants because cells in these organisms have an exoskeleton-like cell wall that provides support, protection, and shape.  When water enters these cells, turgor pressure builds up, which stretches (deforms) the cell wall; at the same time, new material is added to the cell wall to fill in the expanded regions and thereby control the size and shape of the enlarging cell. The interconnected processes of water uptake, wall deformation, and control of cell size and shape are crucial for algal, fungal, and plant survival.

Previous research has provided a good description of the molecular and mechanical changes accompanying expansive growth.  Taking advantage of this foundation, Dr. Joseph K. E. Ortega, Professor of Mechanical Engineering at the University of Colorado, Denver, is bringing a new dimension to quantify cellular changes during expansive growth.  He has developed a mathematical model of the interconnected processes, called the Augmented Growth Equations (AGE). As described in his new publication, the model organizes multiple equations to represent the relationships between variables and uses dimensional analysis to produce dimensionless coefficients. The dimensionless coefficients enable researchers to more easily quantify the biophysical processes and better predict how changes in water absorption and cell wall deformation regulate expansive growth. While the model does not address the shape of the cells, the mathematical framework provides insight as to how water uptake and wall deformation are regulated in algal, fungal, and plant cells to control expansive growth during normal conditions and in response to changes in the environment.

This work is partially funded by the Molecular Biophysics Cluster of the Division of Molecular and Cellular Biosciences, Awards #MCB-0948921.

on the left is a still image from an MRI of a chest with the heart and lungs visible. On the right is a graph with the quick heartbead and slower respiration plotted as curves.

Dr. Steven Van Doren – Example of how the TREND software can distinguish the patterns of a heart beating and lungs breathing from an MRI movie

Visual outputs, such as photographs or movies, contain important data from scientific experiments. For example, identifying biologically relevant signals over time (trends) can be challenging, as they may be subtle or mixed into background movements or noise. To identify trends, researchers scour the data looking for specific features, such as peaks, and either mark them by hand, which is time consuming and subjective, or set specific background thresholds in instrumentation, which can result in mistaking signal for noise. In a new publication, Dr. Steven Van Doren, Professor of Biochemistry at the University of Missouri, and his post-doctoral researcher, Dr. Jia Xu, describe a new software program called TREND (Tracking and Resolving Equilibrium and Nonequilibrium population shifts in Data). The software allows researchers to objectively extract information from two-dimensional images or videos, and in another recent publication, they describe extending the analysis to several different types of data.

TREND uses a statistical approach, called principal component analysis (PCA), on a series of individual measurements to compress and organize multivariate data so that researchers can select for and detect changes in a variety of factors over time. The factors can be anything: characteristics of a stream, grades in a class, or gene variants. When applied to movies, such as this sample video of a sunset, a trend in the data, such as the movement of the sun across the sky, can be plotted after removing background noise, such as motion from clouds. Another example is separating the pattern of a heart beating from lungs breathing using TREND (a photo of this video is shown above). TREND is available for licensing and download at and


This work is partially funded by the Molecular Biophysics Cluster of the Division of Molecular and Cellular Biosciences, Awards #MCB-1409898.



In April, the National Alliance for Broader Impacts (NABI) held its fifth annual Broader Impacts Summit at Skamania Lodge in Stevenson, WA. NABI is a network of more than 600 individuals working together to build institutional capacity, advance broader impacts, and demonstrate the societal benefits of research. NABI members come from educational institutions, museums, science centers, zoos, botanical gardens, professional societies, private industry, foundations, and other organizations. A list of member institutions is available on the NABI website and you can read about the objectives of NABI in a prior post on the MCB Blog. Established in part with funding provided by the Division of Molecular and Cellular Biosciences, NABI events and resources help researchers create and develop impactful broader impacts activities.

At the summit, Dr. Suzanne Iacono, Head of the Office of Integrative Activities (OIA) at the National Science Foundation, delivered a keynote address entitled Broader Impacts at NSF. She noted, across proposals, student education and broadening participation were two main focus areas. These areas were also a major point of discussion in several of the sessions at the meeting.

The theme of the three-day summit was the “Power of Partnerships.” Sessions focused on three strands: innovative BI approaches and activities, faculty and student development and training, and broader impacts infrastructure, skills, and tools. Research into the role of partnerships in empowering high-quality outreach, models for public engagement partnerships, and best practices in the assessment and evaluation of broader impacts were presented, which created a foundation for data-driven conversations about broader impacts for the 21st century and beyond.  Presenters discussed how to construct strong science education and build outreach partnerships with a diverse array of partners such as citizen scientists, startup companies, museums, community partners, STEM graduate students, engineers, and faculty. Summit participants also learned how to use crowdfunding, cinema, social media, and Twitter as tools to facilitate outreach.  Discussion also focused on how to reach non-traditional public audiences, minorities underrepresented in STEM fields, and the next generation of scientists. Panelists offered lessons learned while establishing outreach partnerships such as University of Wisconsin – Madison Science Alliance, which connect scientists with K-12 educators, parents, lifelong learners, students, and others. The Summit had a strong focus on the future of BI and NABI.  Sessions engaged member feedback, discussed the creation of a peer-reviewed journal about broader impacts, and considered the role of the NSF CAREER Program in integrating intellectual merit and broader impacts. Slides for each presentation are available at

If you are interested in becoming a member of the National Alliance for Broader Impacts network, visit their website at to join for free. Registration for the next summit, which will be held at the Providence Biltmore April 25-27, 2018 will become available on the NABI website at

This work is partially funded by the Division of Molecular and Cellular Biosciences, Award #MCB – 1408736.


This is a headshot style photo of Dr. Susan Gerbi who is sitting in her laboratory in front of culture test tubes and a white board, wearing a red sweater, pink turtleneck shirt, and smiling.

MCB congratulates Dr. Susan Gerbi on her 2017 George W. Beadle Award. Each year, the Genetics Society of America honors one investigator for “outstanding contributions to the community of genetics research” such as “creating and disseminating an invaluable technique or tool, assisting the community with the adoption of a model system, working to provide a voice for the community in public or political forums, and/or maintaining active leadership roles.” This distinguished honor was presented to Dr. Gerbi during the 58th Annual Drosophila Research Conference in California.

Dr. Gerbi is the George D. Eggleston Professor of Biochemistry and Professor of Biology at Brown University. In part with NSF support, she has made many notable scientific contributions in all of the areas described above. For example, together with Dr. Joseph Gall, Dr. Gerbi created in situ hybridization, an invaluable technique to locate genes on chromosomes. Additionally, she developed a novel Replication Initiation Point Mapping (RIP) technique that enabled researchers to pinpoint the start site for DNA replication in eukaryotes. Dr. Gerbi and her group also solved the first sequence of eukaryotic 28S ribosomal RNA (28S rRNA). By comparing it to its bacterial homologue (23S rRNA), Dr. Gerbi and her team identified both regions of variability (expansion segments), which aid researchers during phylogenetic analysis, and key regions of conservation (core secondary structure and domain specific conserved sequences) that are held constant among organisms to maintain rRNA function. Further, Dr. Gerbi was the first to identify an in vivo role for U3 small nucleolar RNA, which promotes ribosomal RNA folding and processing, and she was the first to develop a fluorescence-based method to track localization of small RNAs in vivo, which allowed for the identification of specific sequences that target the RNAs to the sites of ribosome assembly in the nucleolus.

Dr. Gerbi and her research team also developed Sciara coprophilia as a model organism, mapping the fly’s genome using a new, handheld DNA sequencing technology called the Oxford Nanopore MinION. (The MinION made a recent appearance in space when it was used by NASA Astronaut Kate Rubins to sequence DNA on the International Space Station.) With the genome, transcriptome, and methodology for genome editing now available, Dr. Gerbi is actively promoting the use of Sciara as a model organism to mine its unique biological features, including a monopolar spindle in meiosis, non-disjunction, chromosome imprinting, and elimination. Studies on Sciara offer new insights into the mechanisms of locus-specific DNA re-replication, which may serve as a paradigm for gene amplification in cancer. This work was partially funded by the Genetic Mechanisms cluster of the Division of Molecular and Cellular Biosciences, Award #MCB-1607411.

Dr. Gerbi has also served the scientific community in numerous leadership positions and science advocacy roles. For example, Dr. Gerbi was Founding Chair of the Department of Molecular Biology, Cell Biology, and Biochemistry at Brown University, serving in that role for 10 years. Just a few of the many broader impacts of her work that have focused on training the next generation of scientists include 33 years of service as principal investigator (PI) or co-PI on Brown University’s National Institutes of Health (NIH) predoctoral training grant. Dr. Gerbi has also served as President of the American Society for Cell Biology (ASCB), fellow of the American Association for the Advancement of Science (AAAS), chair of the Federation of American Societies for Experimental Biology (FASEB) Consensus Conference on Graduate Education, founding member and Chair of the Association of American Medical Colleges (AAMC) Graduate Research Education and Training (GREAT) group, and a member of the National Academy of Sciences Committee’s Study on the National Needs for Biomedical Research Personnel. She was also a member of the National Academy of Sciences committee on Bridges to Independence, which led to NIH’s Pathway to Independence K99 award that provides research funding opportunities to postdoctoral researchers who are transitioning to faculty positions.

For these and other efforts, Dr. Gerbi has contributed greatly to the genetics community through her dedication to scientific research, leadership, and advocacy. Please join us in congratulating Dr. Susan Gerbi!

10 Big Ideas for Future NSF Investment

This infographic shows a black background with a white and blue title reading "10 Big Ideas for Future NSF Investment." The following text says, "The mission of the National Science Foundation is "to promote the progress of science; to advance the national health, prosperty, and welfare; to secure the national defense..." NSF's 10 Big Ideas "to position our Nation at the cutting edge of global science and engineering leadership, and to invest in basic research that advances the United States' prosperity, security, health, and well-being" include:..." followed by an image accompanying each of the titles of the 10 big ideas. An image of a chess board says "Understanding the Rules of Life: Predicting Phenotype." An image of data with ones and zeros says "The Quantum Leap: Leading the Next Quantum Revolution." "Windows on the Universe: The Era of Multi-messenger Astrophysics" with an image of a nebula An image of data streaming says "Harnessing the Data Revolution." An image of circuits leading to a brain says "Work at the Human Technology Fronteir: Shaping the Future." An image of buildings in the night sky says "Mid-scale infrastructure." An image of a glacier breaking apart into the ocean says "Navigating the New Artic." An image of a lightbulb with a sapling says "NSF 2026: Seeding Innovation." An image of three arrows converging on a blue background says "Growing Convergent Research at NSF." An image of people doing research, communicating, a pencil drawing, representing diversity in science says "INCLUDES." The text on the bottom says, "Learn More at https//" next to the NSF logo in black and white. images credited in order of appearance: ANDROMACHI; Mmaxer; NASA images; GarryKillian; Sergey Tarasov; Panimoni; Netta Arobas; Somchaij; Satenik Guzhanina. NSF INCLUDES available at