Carnegie Institution for Science

Liposome supplementation enhances host metabolism in a model symbiotic cnidarian

Abstract Stable cnidarian–dinoflagellate symbioses provide the trophic foundation of coral reef ecosystems. Understanding nutrient exchange underpinning this symbiosis, and the need for interventions to improve coral health via aquaculture, grow increasingly urgent as reefs face...

That’s So Retro: The Gaia-Sausage-Enceladus Merger Trajectory as the Origin of the Chemical Abundance Bimodality in the Milky Way Disk

Abstract The Milky Way (MW) is thought to have experienced a ∼3:1 mass-ratio merger event near redshift z ∼ 2 with a significantly retrograde trajectory. This now-disrupted dwarf galaxy is commonly known as the Gaia-Sausage-Enceladus (GSE). In this paper, we investigate the impac...

Meteoritic organic matter records primitive oxygen reservoirs of the solar system

Unraveling the complex formation and alteration history for extraterrestrial organic matter is key to understanding the chemical evolution of the solar system (SS) and potentially even life’s emergence on Earth. In this study, we performed high-precision triple oxygen isotope mea...

Carbon solubility and liquid–liquid immiscibility in Fe–C–S ternary system up to 6 GPa: implications for the core of small planetary bodies

Abstract High-pressure, high-temperature experiments were conducted in a multi-anvil press using seven different starting compositions to investigate the phase relations of Fe–C–S liquids at pressures up to 6 GPa and temperatures up to 2000 K. Quenched samples revealed immiscible...

Kinetic hindrance of phase transformations in dense MgSiO 3 polymorphs under shock compression

Equilibrium phase diagrams define the pressure-temperature stability fields of MgSiO 3 polymorphs, yet whether these phase transformations can proceed under shock compression remains poorly constrained. Here, we present in situ synchrotron x-ray diffraction (XRD) measurements of...

Deciphering the genomic signatures of climate vulnerability across 77 sheep breeds

Abstract Among domesticated species, sheep ( Ovis aries ) have achieved a wide geographic distribution due to their mobility, rusticity and ability to adapt to diverse environments and climatic conditions. Here, we characterise the genome-wide diversity of >1,000 sheep representi...

Ultrahigh flow strength in shocked nanopolycrystalline diamond

Extreme pressures and temperatures create conditions that allow even hard and brittle materials to flow plastically. Despite extensive research, the limits of flow strength under such conditions remain uncertain, and the mechanisms driving deformation at the relevant stresses are...

Manure to insect farming for feed mitigates nitrogen and greenhouse gas emissions

Livestock manure is nutrient-rich and represents a promising feedstock for insect farming, with insect protein offering a high-quality alternative to conventional crop-based livestock feed. This pathway has substantial potential to mitigate nitrogen (N) and greenhouse gas (GHG) e...

The parent bodies of Ryugu and Ivuna formed before those of other carbonaceous chondrites

Most carbonaceous chondrite (CC) meteorites contain abundant chondrules, millimeter-scale spherical inclusions of previously molten material. Ivuna-type carbonaceous chondrites (CIs) do not contain chondrules, nor do samples of the carbonaceous asteroid Ryugu. CIs and Ryugu share...

The plausible relationship between deep long-period earthquakes and volatiles: a case study of the Alaska-Aleutian arc

Abstract Deep long-period (DLP) earthquakes are observed beneath volcanoes in various tectonic settings during background activity, unrest, and eruption. The exact processes generating DLPs have been subject to ongoing debate, as they may provide insight into deep magmatic plumbi...

CDK8 phosphorylation of DELLA limits Mediator recruitment in gibberellin signaling

Gibberellin (GA) promotes plant growth primarily by triggering degradation of DELLA transcription regulators, yet how DELLA activity is fine-tuned dynamically by phosphorylation independently of proteolysis remains poorly understood. Here, we show that the CDK8 kinase module of t...

Reconstitution of lamin assembly on nuclear pore complex-containing membranes

Intermediate filaments called lamins line the metazoan nuclear envelope and organize the nucleus and genome. Unlike actin and microtubules, purified intermediate filament proteins assemble into non-physiological structures, making it difficult to connect lamin functions to their...

Dike‐Induced Earthquakes as Probes of the Local Stress Field Prior to the 1998 Eruption of the Piton de la Fournaise Volcano, La Réunion

Abstract Volcano‐tectonic (VT) earthquakes generated during dike propagation provide useful constraints on stress changes in volcanic systems. During the 1998 pre‐eruptive unrest at Piton de la Fournaise, ∼600 VT earthquakes were recorded. Using manually picked first‐motion polar...

Quantum Technologies as a Driver of Future Industrial Policy

Quantum technologies are increasingly recognized as a disruptive frontier that will shape the next generation of industrial strategies. Developments in quantum computing, communication, and sensing promise not only technical breakthroughs but also significant economic and geopoli...