STRIVE is designed to probe the elusive interface between the stratosphere and the troposphere—the atmospheric regions where weather phenomena initiate and where the critical ozone layer resides. Employing compact infrared instruments, STRIVE will facilitate over 400,000 daily measurements by observing the atmosphere sideways rather than looking directly downward. This innovative vantage point permits high-resolution vertical profiling of temperature and trace gases, providing an unprecedented look into the chemistry and physics governing the ozone layer and the troposphere’s influence on weather systems and pollution transport.

This mission is anticipated to transform atmospheric chemistry studies by delivering not only ozone concentration data but a comprehensive compositional analysis of all chemical species that modulate ozone’s behavior in the stratosphere. Post-depletion recovery of the ozone layer, which absorbs harmful ultraviolet radiation, still necessitates precise monitoring to understand subtle changes influenced by natural and anthropogenic factors. STRIVE’s detailed spectroscopic measurements will thus be critical for evaluating ongoing ozone dynamics as well as for assessing how events such as volcanic eruptions and wildfires redistribute pollutants through vertical atmospheric transport.

By capturing intricate constituent levels and temperature gradients at the stratosphere-troposphere boundary, STRIVE holds potential to significantly enhance predictive capabilities of weather models. Current forecasting models largely depend on incomplete understanding of stratospheric influences; STRIVE’s data could unravel the mechanisms by which disturbances high above propagate downward, impacting surface weather weeks later. This may extend the predictive window beyond the typical ten-day forecast period, equipping communities with earlier warnings of extreme weather and potentially mitigating disaster impacts.

The STRIVE collaboration encompasses a multidisciplinary team spanning academia, industry, and federal research entities. The principal investigator, UW atmospheric and climate scientist Lyatt Jaeglé, alongside key contributors such as University of Iowa’s Jun Wang and NASA Goddard’s Luke Oman, exemplifies the mission’s comprehensive scientific leadership. Additional UW atmospheric science faculty members contribute expertise, underscoring the university’s commitment to leading-edge Earth system research.

Parallel to STRIVE, the EDGE mission spearheaded by a team including scientists from UW’s Applied Physics Laboratory and led by Helen Amanda Fricker of the University of California San Diego, aims to capture the three-dimensional dynamics of Earth’s surface with unparalleled precision. Employing the first-ever global satellite laser altimeter system capable of firing over 150,000 laser pulses per second, EDGE measures subtle variations in surface elevation that are critical to understanding glacier dynamics, ice sheet responses, forest canopy structures, and coastal changes.

EDGE’s laser altimetry technology operates by timing the return of emitted laser pulses reflected from Earth’s surface, allowing detection of changes at a granular scale. This capability facilitates the monitoring of small-scale geomorphological phenomena such as crevasses on polar ice or individual tree canopies in temperate forests. By extending this precision globally, EDGE can document seasonal and decadal trends that inform scientific models of climate-driven transformations and natural hazard assessments.

The ability to measure fine-scale elevation changes provides key insights into processes driving larger environmental changes. For instance, detecting incremental ice sheet thinning elucidates contributions to global sea level rise, while detailed forest canopy measurements inform carbon cycle studies and wildfire risk assessments. This comprehensive “everything mission” approach positions EDGE as a transformative asset for a diverse array of Earth science disciplines.

The EDGE team’s expertise spans civil and environmental engineering, physics, and geosciences, with UW senior scientists Benjamin Smith, Tyler Sutterley, and David Shean instrumental in mission development. Their collaboration with national and international partners ensures that EDGE data will not only enhance scientific inquiry but also serve practical applications in natural hazard monitoring, water resource management, and climate resilience planning.

Both STRIVE and EDGE embody the next frontier of Earth observation, with each mission projected to launch no earlier than 2030 and adhering to rigorous budget constraints of under $355 million excluding launch expenditures. These investments represent a technological leap that couples sophisticated instrumentation with targeted scientific questions, exemplifying NASA’s vision to deepen humanity’s understanding of Earth’s complex systems amid a rapidly changing climate.

As these missions prepare for development and eventual deployment, they offer a rare opportunity for the academic community to contribute to and benefit from data that will shape the environmental sciences for decades to come. The involvement of UW faculty and the integration of cutting-edge technology into these missions underscore the increasing importance of collaborations bridging disciplines and institutions.

In an era where the consequences of climate change and natural disasters are escalating in scale and urgency, the detailed observational insights enabled by STRIVE and EDGE are poised to transform how society monitors, predicts, and responds to environmental challenges. The enhanced temporal and spatial resolution of atmospheric and surface data they promise could become a cornerstone for climate adaptation strategies worldwide.

For those engaged in atmospheric and earth system sciences, the upcoming decade promises a wealth of knowledge harvested from these missions, catalyzing innovations in modeling, forecasting, and environmental management. With STRIVE and EDGE, NASA and the University of Washington are charting an ambitious course toward safeguarding the planet’s future.

Subject of Research: Earth system science focusing on atmospheric chemistry and dynamics; surface elevation changes and cryospheric responses to climate change

Article Title: NASA Selects University of Washington-led STRIVE and EDGE Missions to Revolutionize Earth Observation

News Publication Date: June 2024

Web References:

• https://www.nasa.gov/news-release/nasa-selects-two-earth-system-explorers-missions
• https://strive.uw.edu/
• https://edge.ucsd.edu/team/
• https://today.ucsd.edu/story/uc-san-diego-led-science-team-selected-for-nasa-satellite-mission

Keywords: Atmospheric science, stratosphere, troposphere, ozone layer, greenhouse gases, atmospheric chemistry, climate change, natural disasters, wildfires, volcanoes, polar ice caps, altimetry, sea level rise, geomorphology, Earth atmosphere

In a groundbreaking study led by the University of Washington, researchers have innovatively utilized the constant influx of cosmic dust as a natural archive to reconstruct patterns of Arctic sea ice coverage over the last 30,000 years. Cosmic dust, comprising tiny particles originating from stellar explosions and comet collisions, continuously blankets Earth’s surface. Upon passing near the sun, these particles acquire a unique isotope signature via helium-3 implantation, an exceedingly rare form of helium used as a tracer. This isotope signature allows scientists to effectively distinguish extraterrestrial particles from terrestrial sediments, opening new vistas in paleoclimate research where traditional satellite data are unavailable.

Identifying cosmic dust within Arctic sediment cores offers a novel proxy for historic ice coverage. This approach hinges on a simple yet powerful principle: when sea ice is present, it shields the ocean floor beneath it, preventing cosmic dust from settling. Conversely, open water allows the dust to deposit freely onto the seafloor, embedding itself within accumulating sediments. By quantifying the levels of helium-3 in sediment samples from various Arctic sites, researchers can infer past ice presence and absence, thereby weaving a detailed chronology of sea ice dynamics that far predates direct observations.

The study encompassed sediment cores from three strategically selected Arctic locations that represent a gradient of modern ice conditions. The first site lies near the constantly ice-covered North Pole, the second straddles the marginal ice zone that retreats seasonally, and the third was ice-bound only a few decades ago but now experiences seasonal ice-free conditions. These diverse settings provided a spatially comprehensive perspective for understanding how cosmic dust accumulation correlates with varying degrees of sea ice persistence over millennia, allowing for unprecedented insight into Arctic climatology.

Intriguingly, the sediment record revealed that during the Last Glacial Maximum approximately 20,000 years ago, Arctic sediments were almost devoid of cosmic dust, consistent with perennial sea ice coverage. As the planet’s climate warmed and the ice began melting post-glacially, helium-3-rich dust concentrations surged, signaling increased open water conditions. These findings not only align with existing paleoenvironmental data but also validate the use of cosmic dust as a highly sensitive and precise proxy for reconstructing Arctic sea ice history.

Beyond reconstructing ice extent, the research shed light on how these historic ice fluctuations influenced nutrient cycling within the Arctic marine ecosystem. Using chemical analyses of foraminifera shells—tiny marine organisms that incorporate chemical signatures reflective of their nutrient uptake—scientists identified shifts in nutrient consumption patterns concurrent with ice cover changes. When sea ice was minimal, nutrient consumption peaked, suggesting elevated biological productivity, whereas thick ice presence correlated with diminished nutrient use, illustrating the profound ecological ramifications of sea ice variability.

These nutrient dynamics carry significant implications for Arctic marine food webs. As phytoplankton—the foundational producers in marine ecosystems—increase their nutrient uptake during low ice conditions, the entire food chain experiences alterations that could restructure Arctic marine ecosystems. Understanding these shifts is vital for anticipating changes in fish populations and other marine life critical to indigenous communities and commercial fisheries, not to mention the broader implications for carbon cycling and global climate regulation.

The precise drivers behind nutrient availability changes remain a topic of active investigation. One hypothesis posits that declining sea ice increases photosynthesis, boosting nutrient consumption and thereby marine productivity. An alternative hypothesis suggests that melting ice dilutes nutrient concentrations, potentially reducing their availability even as consumption metrics appear to rise. Disambiguating these mechanisms is crucial for accurate climate and ecosystem modeling, underscoring the importance of continued multidisciplinary research in this domain.

Importantly, this study exemplifies how integrating geochemical proxies with ecological data provides powerful tools to decipher complex climate-ecosystem interactions over geological timescales. Employing helium-3 as a cosmic dust tracer has breached previous methodological limitations, enabling scientists to unravel the nuanced tapestry of Arctic environmental change in extraordinary detail. This approach sets a precedent for analogous research in other remote or poorly instrumented regions of the globe where conventional monitoring is challenging or impossible.

From a geopolitical perspective, predicting the timing and spatial patterns of future Arctic sea ice loss bears immense strategic significance. Changes in ice coverage influence shipping lanes, resource exploitation rights, and international territorial claims. Understanding how these transformations will unfold equips policy-makers and stakeholders with critical information to manage emerging opportunities and risks in the rapidly changing Arctic landscape.

This pioneering research was supported by the National Science Foundation and the Foster and Coco Stanback Postdoctoral Fellowship, reflecting a robust commitment to advancing scientific frontiers at the intersection of climatology, oceanography, and planetary science. Collaborative contributions from scientists at the University of Massachusetts Boston, the United States Geological Survey, and Caltech further underscore the interdisciplinary nature of this effort.

As Arctic sea ice continues to retreat at unprecedented rates, studies such as this deepen our understanding of the long-term dynamics that govern polar environments. Harnessing the cosmic dust record not only illuminates past climates but also enhances models forecasting future trajectories, contributing critical knowledge to global efforts aimed at mitigating and adapting to climate change.

For more information on this study and its implications, Frankie Pavia at the University of Washington can be contacted at fjpavia@uw.edu.

Subject of Research: Not applicable

Article Title: Cosmic dust reveals dynamic shifts in central Arctic sea-ice coverage over the last 30,000 years

News Publication Date: 6-Nov-2025

Web References:

• https://arctic.noaa.gov/report-card/report-card-2024/sea-ice-2024/
• https://www.climate.gov/news-features/understanding-climate/five-things-understand-about-ice-free-arctic
• http://www.science.org/doi/10.1126/science.adv5767

References:
Pavia, F., Farmer, J. R., Gemery, L., Cronin, T. M., Treffkorn, J., & Farley, K. A. (2025). Cosmic dust reveals dynamic shifts in central Arctic sea-ice coverage over the last 30,000 years. Science. DOI: 10.1126/science.adv5767

Image Credits: Bonnie Light/University of Washington

Keywords: Paleoclimatology, Radioisotopes, Radiometric dating, Climate monitoring, Marine photosynthesis, Marine biology, Oceanography, Marine ecosystems, Marine food webs, Sea floor, Ocean chemistry, Sea ice, Fossils

The RAR molecule is a modified RNA motif, intricately designed to mimic components found in the hepatitis C virus genome. When introduced into human hepatocellular carcinoma cell lines, RAR elicited a strong response from the immune system, notably triggering the production of interferon beta (IFN-β), a critical mediator in fighting viral infections and tumor proliferation. The synthesis of this molecule holds promise not only for its immediate effects on cancer cells but also for fostering a broader immune response.

The experimental outcomes reported by the research team underscore a dual mechanism of action. The RNA-induced cell death seen in hepatoma cells was further enhanced by administering recombinant IFN-β alongside RAR. This additive effect indicates that the combination could represent a new therapeutic approach, leveraging the immune system’s capabilities while directly targeting cancerous cells. Researchers are optimistic that this therapeutic strategy could pave the way for innovative treatments for HCC and perhaps other malignancies.

As cancer continues to pose a significant global health challenge, the discovery of agents that stimulate innate immune responses offers a beacon of hope. The findings suggest an encouraging model for how RAR can lead to programmed cell death in hepatocellular carcinoma. Such pathways are vital not only for the treatment of existing cancers but could also prevent recurrence after surgery or traditional therapies. This reinforces the necessity for ongoing research into the immune system’s role in cancer therapeutics.

The significance of targeting the innate immune system in cancer treatment cannot be overstated, especially as researchers aim to improve patient outcomes and reduce side effects associated with conventional therapies like chemotherapy. The study’s principal investigator, Michael Gale, Jr., articulates a vision where therapies such as RAR might play a prominent role in comprehensive cancer care, heralding a new era where synthetic biology can address such profound health challenges.

Moreover, the research points to the broader implications of RIG-I activation beyond hepatocellular carcinoma. The capacity of RIG-I agonists to induce immune activation could also be explored in various cancers, potentially allowing for tailored immunotherapeutic approaches that capitalize on this vulnerability. By harnessing the body’s innate immune responses, scientists hope to unlock new avenues for combating not just HCC, but a myriad of difficult-to-treat malignancies.

The study utilized two distinct human hepatocellular carcinoma cell lines for testing RAR’s effects. This diversity in the experimental model is crucial, as it aids in validating results across varying biological conditions. Such rigorous methodologies ensure that the conclusions drawn are not merely due to chance or unique to one particular cell line, enhancing the reliability and applicability of the findings in future clinical scenarios.

Furthermore, the mechanism behind the action of RAR involves interaction with specific receptor systems in cells that underlie key signaling pathways essential for cell survival and death. By elucidating these pathways, the research lays the groundwork for subsequent studies that may examine combinational therapies or sequential treatment regimens involving RAR and other immune modulators. This could create robust treatment plans that maximize efficacy while minimizing the potential for resistance.

The implications of the research extend to the realm of drug development. The design and characterization of RAR provide insights for the synthesis of novel compounds aimed at various targets within the immune system’s arsenal. As the field of immuno-oncology continues to evolve, the success of RAR could inspire a series of new therapeutic agents, each tailored to specific malignancies and patient needs.

It’s essential to underscore that while this study presents promising data, further investigation in preclinical and clinical phases is necessary to validate RAR’s safety and efficacy in human subjects. The transition from the lab bench to the clinic remains a complex journey, marred by the challenges of translating laboratory successes into real-world patient benefits.

The insights derived from this innovative research have not gone unnoticed in the academic community. Peer feedback has highlighted the quality and potential impact of the findings, suggesting that RAR and similar molecules may inject new life into the quest for effective therapies against liver cancer and possibly broader types of cancer. Such recognition underscores the importance of continual support for research endeavors that strive to push the boundaries of current medical understanding and practices.

In conclusion, the study on RIG-I agonist RNA embodies the spirit of innovation in cancer research. As scientists continue to explore the intersections between cancer biology and immunology, the potential for breakthroughs like RAR shines brightly. With proper funding, collaboration, and attention, this research could spotlight pathways leading to effective therapies and perhaps a future where cancer is not only treatable but preventable.

Subject of Research: Cells
Article Title: Synthetic RIG-I-Agonist RNA Induces Death of Hepatocellular Carcinoma Cells
News Publication Date: February 19, 2025
Web References: Journal of Interferon & Cytokine Research
References: DOI: 10.1089/jir.2024.0195
Image Credits: Credit: Published in Journal of Interferon & Cytokine Research, copyright 2025, Mary Ann Liebert, Inc.
Keywords: Clinical research, Interferons, Hepatocellular carcinoma, RNA mechanisms, Immune response.