[
    {
        "id": "authors:r64df-hae50",
        "collection": "authors",
        "collection_id": "r64df-hae50",
        "cite_using_url": "https://authors.library.caltech.edu/records/r64df-hae50",
        "type": "article",
        "title": "Microbial growth rates captured using Raman-SIP reveal a highly active subsurface biosphere fueled by serpentinization",
        "author": [
            {
                "family_name": "Kashyap",
                "given_name": "Srishti",
                "orcid": "0000-0003-4950-9636"
            },
            {
                "family_name": "Caro",
                "given_name": "Tristan A.",
                "orcid": "0000-0001-6177-7444",
                "clpid": "Caro-Tristan-A"
            },
            {
                "family_name": "Templeton",
                "given_name": "Alexis S.",
                "orcid": "0000-0002-9670-0647"
            }
        ],
        "abstract": "Microbial productivity, metabolite fluxes, nutrient cycling and biosignatures are directly linked to microbial growth rates, which remain largely unknown in subsurface environments. Here, we apply Raman-stable isotope probing with deuterated water (Raman-2H-SIP) to measure single-cell microbial growth rates in three geochemically distinct fluids obtained at 250-270\u2009m depth in serpentinite rocks in Oman. We observe wide distributions in growth that vary with fluid geochemistry, with inferred cell-specific microbial generation times ranging from days to years. The majority of measured generation times are faster than those previously reported in subsurface rock-hosted ecosystems, showing extensive microbial growth can be supported by actively serpentinizing systems. Amendment with bicarbonate stimulates some of the fastest growth and methane production rates, highlighting microbial preference to utilizing dissolved inorganic carbon, even in [hyper]alkaline groundwaters. Overall, our cell-specific rates of growth and methanogenesis provide quantitative insights into the habitability of continental serpentinizing ecosystems and their reservoir-scale biogeochemical dynamics.",
        "doi": "10.1038/s41467-026-70622-w",
        "issn": "2041-1723",
        "publisher": "Nature Publishing Group",
        "publication": "Nature Communications",
        "publication_date": "2026-03-18",
        "volume": "17",
        "pages": "4128"
    },
    {
        "id": "authors:ppq9a-dgs04",
        "collection": "authors",
        "collection_id": "ppq9a-dgs04",
        "cite_using_url": "https://authors.library.caltech.edu/records/ppq9a-dgs04",
        "type": "article",
        "title": "Searching for extraterrestrial life advances terrestrial sustainability",
        "author": [
            {
                "family_name": "Howells",
                "given_name": "Alta E. G.",
                "orcid": "0000-0001-5700-7842"
            },
            {
                "family_name": "Fontana",
                "given_name": "Catherine G."
            },
            {
                "family_name": "Elkassas",
                "given_name": "Sabrina",
                "orcid": "0000-0002-4724-4606"
            },
            {
                "family_name": "Caro",
                "given_name": "Tristan A.",
                "orcid": "0000-0001-6177-7444",
                "clpid": "Caro-Tristan-A"
            },
            {
                "family_name": "Kashyap",
                "given_name": "Srishti",
                "orcid": "0000-0003-4950-9636"
            }
        ],
        "abstract": "<p>Astrobiology, while traditionally focused on understanding the origin of life on Earth and the potential for life elsewhere, offers powerful tools and insights for addressing urgent challenges on our planet. We call for a deliberate integration of astrobiological research with applied science. Knowledge gained from biological systems and study sites on Earth that guide investigation of planetary bodies in our solar system can inform strategies for carbon capture, low-carbon energy production, waste remediation, and biotechnology. Therefore, we argue that astrobiology must evolve to become a bidirectional science that not only explores the cosmos but also supports sustainable life on Earth.</p>",
        "doi": "10.1038/s41467-025-67794-2",
        "pmcid": "PMC12775524",
        "issn": "2041-1723",
        "publisher": "Nature Publishing Group",
        "publication": "Nature Communications",
        "publication_date": "2025-12-24",
        "volume": "17",
        "pages": "109"
    }
]