World's Best Scientists 2026 revealed!
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Earth Science
USA
2026

D-Index & Metrics

Earth Science

D-Index
138
Citations
64556
World Ranking
14
National Ranking
4

Research.com Recognitions

  • 2026 - Research.com Earth Science in United States Leader Award
  • 2025 - Research.com Earth Science in United States Leader Award
  • 2022 - Research.com Earth Science in United States Leader Award
  • 1994 - Fellow of the American Association for the Advancement of Science (AAAS)
  • 1991 - Member of the National Academy of Sciences
  • 1987 - Fellow of the American Academy of Arts and Sciences
  • 1986 - Fellow of John Simon Guggenheim Memorial Foundation
  • Fellow of the Geological Society of America
  • Fellow of the Geological Society of America

Overview

Andrew H. Knoll is affiliated with Harvard University in the United States and has contributed extensively to Earth and Planetary Sciences, with a focus on paleontology and related subfields. Their research portfolio includes topics such as paleontology and stratigraphy of fossils, geology and paleoclimatology research, geochemistry and elemental analysis, planetary science and exploration, geological and geochemical analysis, marine and coastal plant biology, and aspects of astro and planetary science.

The scientist's recent publications demonstrate engagement with a range of subjects across Earth sciences and astrobiology. Notable papers include:

  • Biomineralization: Integrating mechanism and evolutionary history, 2022, Science Advances
  • Cyanobacteria and biogeochemical cycles through Earth history, 2021, Trends in Microbiology
  • Neoproterozoic origin and multiple transitions to macroscopic growth in green seaweeds, 2020, Proceedings of the National Academy of Sciences
  • A coupled model of episodic warming, oxidation and geochemical transitions on early Mars, 2021, Nature Geoscience
  • A persistently low level of atmospheric oxygen in Earth's middle age, 2021, Nature Communications

Their frequent collaborators reflect strong partnerships within the field. Prominent co-authors include Kristin Bergmann, J. P. Grotzinger, Marjorie Cantine, Robert M. Hazen, and Susannah M. Porter.

Andrew H. Knoll has also appeared regularly in several publication venues, indicating an active role in disseminating research findings. These venues include:

  • Abstracts with programs - Geological Society of America
  • Zenodo (CERN European Organization for Nuclear Research)
  • Nature Communications
  • Science Advances
  • Proceedings of the National Academy of Sciences

In terms of recognition, they have received multiple fellowships and memberships from prominent scientific organizations. Among these are:

  • Fellow of the American Association for the Advancement of Science (AAAS), 1994
  • Member of the National Academy of Sciences, 1991
  • Fellow of the American Academy of Arts and Sciences, 1987
  • Fellow of John Simon Guggenheim Memorial Foundation, 1986
  • Fellow of the Geological Society of America

The breadth of Andrew H. Knoll's work spans from detailed studies of fossils to broader planetary science questions, reflecting an interdisciplinary approach within Earth and planetary sciences. Their contributions offer insight into the evolution of life, environmental changes throughout geological time, and planetary processes beyond Earth.

Best Publications

  • The Evolution of Modern Eukaryotic Phytoplankton

    Paul G. Falkowski;Miriam E. Katz;Andrew H. Knoll;Antonietta Quigg

  • Neoproterozoic variations in the C-isotopic composition of seawater: stratigraphic and biogeochemical implications.

    Alan J. Kaufman;Andrew H. Knoll

  • Proterozoic ocean chemistry and evolution: A bioinorganic bridge?

    Ariel D. Anbar;Andrew Knoll

  • In situ evidence for an ancient aqueous environment at Meridiani Planum, Mars.

    Steven W. Squyres;John P. Grotzinger;Raymond E. Arvidson;James F. Bell

  • STROMATOLITES IN PRECAMBRIAN CARBONATES : EVOLUTIONARY MILEPOSTS OR ENVIRONMENTAL DIPSTICKS ?

    John P. Grotzinger;Andrew H. Knoll

  • Large Perturbations of the Carbon Cycle During Recovery from the End-Permian Extinction

    Jonathan L. Payne;Daniel J. Lehrmann;Jiayong Wei;Michael J. Orchard

  • Estimating the timing of early eukaryotic diversification with multigene molecular clocks

    Laura Wegener Parfrey;Daniel J. G. Lahr;Andrew H. Knoll;Laura A. Katz

  • Three-dimensional preservation of algae and animal embryos in a Neoproterozoic phosphorite

    Shuhai Xiao;Yun Zhang;Andrew H. Knoll

  • Early Animal Evolution: Emerging Views from Comparative Biology and Geology

    Andrew H. Knoll;Sean B. Carroll

  • Comparative Earth History and Late Permian Mass Extinction

    Andrew Knoll;Richard Bambach;Donald E. Canfield;John P. Grotzinger

  • Ferruginous Conditions Dominated Later Neoproterozoic Deep-Water Chemistry

    Donald E. Canfield;Simon W. Poulton;Andrew H. Knoll;Guy M. Narbonne

  • The early evolution of eukaryotes: a geological perspective.

    Andrew H. Knoll

  • Eukaryotic organisms in Proterozoic oceans

    Andrew Herbert Knoll;Emmanuelle J. Javaux;David Hewitt;Phoebe A Cohen

  • Secular variation in carbon isotope ratios from Upper Proterozoic successions of Svalbard and East Greenland.

    A. H. Knoll;J. M. Hayes;A. J. Kaufman;K. Swett

  • Paleophysiology and End-Permian Mass Extinction

    Andrew H. Knoll;Richard K. Bambach;Jonathan L. Payne;Sara Pruss

  • Calibrating rates of early Cambrian evolution.

    Samuel A. Bowring;John P. Grotzinger;Clark E. Isachsen;Andrew H. Knoll

  • The Vendian record of Sr and C isotopic variations in seawater: Implications for tectonics and paleoclimate

    Alan J. Kaufman;Stein B. Jacobsen;Andrew H. Knoll

  • The Multiple Origins of Complex Multicellularity

    Andrew H. Knoll

  • Biomarker evidence for green and purple sulphur bacteria in a stratified Palaeoproterozoic sea

    Jochen J. Brocks;Gordon D. Love;Roger E. Summons;Roger E. Summons;Andrew H. Knoll

  • Overview of the Spirit Mars Exploration Rover Mission to Gusev Crater: Landing site to Backstay Rock in the Columbia Hills

    R. E. Arvidson;S. W. Squyres;R. C. Anderson;J. F. Bell

  • Isotopes, Ice Ages, and Terminal Proterozoic Earth History

    Alan J. Kaufman;Andrew H. Knoll;Guy M. Narbonne

Frequent Co-Authors

John P. Grotzinger
John P. Grotzinger California Institute of Technology
Scott M. McLennan
Scott M. McLennan Stony Brook University
James F. Bell
James F. Bell Arizona State University
Raymond E. Arvidson
Raymond E. Arvidson Washington University in St. Louis
Nicholas J. Tosca
Nicholas J. Tosca University of Oxford
Steven W. Squyres
Steven W. Squyres Cornell University
William H. Farrand
William H. Farrand Space Science Institute
Jeffrey R. Johnson
Jeffrey R. Johnson Johns Hopkins University Applied Physics Laboratory
Alan J. Kaufman
Alan J. Kaufman University of Maryland, College Park
Malcolm R. Walter
Malcolm R. Walter University of New South Wales

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