Throughout the Fall and Winter terms, the Department of Earth and Environmental Sciences hosts the William T. Smith Lecture Series that brings in distinguished speakers from other universities and research institutions. In most years the Department also hosts a Vandervoo and a Dorr lecture.

2020-2021

September 8, Imbalance of Carbon Production and Removal Processes in the Offshore California Current Ecosystem, Sara Rivera, UMich

October 2, Diversifying oceanography: The Coastal Ocean Environment Summer School in Ghana, Brian Arbic,  UM; Edem Mahu,  University of Ghana; Adam Simon,  UM; Madeline Foster-Martinez,  University of New Orleans

October 9, Shock compression experiments of natural silicates to elucidate planetary impact processes, Bethany A. Chidester, UC Davis

October 16, Impact basins as probes of planetary interiors, Brandon Johnson, Purdue

October 23, Petrological modeling of subduction of the oceanic crust: insights into slab dehydration and melting, David Hernandez Uribe, UMich

October 30, Probing Surface-Interior Mass Exchange in the Earth Using Nitrogen, Ananya Mallik, U of Arizona

November 6, Some Observations on the Evolution of the Earth System: Plate Tectonics,  Paleogeography,  Paleoclimate,  and Paleobiogeography, Vandervoo Lecture: Chris Scotese, Northwestern

November 13, Global Quieting of Anthropogenic,  High-Frequency Seismic Noise Due to COVID-19 Pandemic Lockdown Measures, Thomas Lecocq, Royal Observatory of Belgium

November 20, Extreme Rain-Snow Elevation Changes during California Storms,  and My STEM Journey, Tashiana C Osborne, UCSD

December 4, Evaluation of Terrestrial Water and Energy Budget Components over the St. Lawrence River Basin, Yiwen Mei, UMich 

January 22, Tracking and Anticipating Lava Flow Emplacement, Oryaëlle Chevrel , Institut de Recherche pour le Développement,  Laboratoire Magma et Volcans,  UCA 

January 29, Fossils,  Isotopes,  and Rainforests: New Approaches Challenge Foundational Tenets of Stable Isotope Terrestrial Paleoecology and Biogeographical Reconstructions of Mammals in the Neotropics, Julia Tejada, Université de Montpellier

February 5, Using Alteration Minerals Chemical and Isotopical Variations as a Proxy for Unravelling the Formation of Andean Iron Oxide Copper Gold Deposits, Irene del Real , University of Chile

February 12, Molecular Memories of Earth’s Antiquity, Jennifer Glass , Georgia Tech

February 19, Chemical mixing and mantle convection driven (or hindered) by eclogite in the terrestrial planets, Jin Zhang, University of New Mexico

February 26, Unraveling Potential Biases in U-Pb Detrital Zircon Record Induced by High-temperature Metamorphism (> 850 ºC), Mahyra Tedeschi, Universidade Federal de Minas Gerais

March 5, Probing Earth’s Near-Surface Structure: Measure the Angle,  Not the Timing, Sunyoung Park, Univ. of Chicago

March 12, Precious vapors: Are vapors viable ore fluids in the context of porphyry ore?, Nicole Hurtig, New Mexico Tech

March 19, 3D Seismic Reflection Data: Has the Geological Hubble Retained Its Focus?, Christopher Aiden-Lee Jackson, Imperial College

March 26, Insights into Rhyolite Production at a Frequently Active Silicic Center as Revealed by Quartz _18O Ratios, Mai Sas, Western Washington University

April 2, Walking the Seismogenic Zone: A Field Geology Perspective on the Earthquake Cycle, Christie Rowe, McGill

April 9, Geochemical Constraints on Past Continental Crust Composition and Earth Surface Conditions, Sarah Aarons, Scripps

2019-2020

September 6, “Water” In and On the Surface of Terrestrial Planetary Bodies,  by Any Means, Yang Liu, JPL

September 13, The Other Greenhouse Gas. Sources of Water Vapor,  from Lakes to Leaves,  from a Surface Measurement Perspective., Peter Blanken, Colorado Boulder

September 20, Chemistry of Core-mantle Differentiation of Earth's Interior, Andrew Campbell, U Chicago

September 27, The Mechanics of Slow Earthquakes and Lab Earthquake Prediction, Chris Marone, Penn State

October 4, Mineral Hydration and Microbial Activity Within Subsurface Ultramafic Rocks, Alexis Templeton, Colorado Boulder

October 11, USGS Products to Inform Earthquake Response, Jonathan Godt, USGS

October 18, The Hominin Sites and Paleolakes Drilling Project (HSPDP): How lakebeds are reshaping our understanding of the environmental context of human origins, Andy Cohen, University of Arizona

October 25, What Really Happened in the Continental Realm During the First of Three Great Global Extinctions?: The Chronostratigraphy of Beaufort Group Strata Deposited Across the Permian/Triassic Boundary,  Karoo Basin,  South Africa? (and other musings), John Geissman, University of Texas at Dallas

November 1, The Chinese Cave Record: 640, 000 years of Climate History, Larry Edwards, U of Minnesota

November 15, Unraveling the Signature of Metasomatized Subcontinental Lithospheric Mantle in the Basaltic Magmatism of the Payenia Volcanic Province,  Argentina, Alberto Saal, Brown

December, 6, Origin of the Mesoproterozoic Igneous Rocks in the St. Francois Mountains,  Missouri,  USA, Warren Day, USGS

January 10, What Can Little Faults Tell Us About Big Earthquakes?, Michele Cooke, UMass Amherst

January 17, Understanding Large-Scale Mantle Convection, Allen McNamara, Michigan State

January 24, Vandervoo Lecture:Paleo/Geomagnetism and Geobiology: Case Studies from the Ediacaran and Jurassic, Joseph Meert, University of Florida

January 31, Theoretical and Computational Contributions to the Modeling of Global Tsunamis, Amir Salaree, University of Michigan

February 7, Tectonics,  Climate,  and Topography: A View from the Greater Caucasus, Adam M. Forte, Louisiana State University

February 14, Weathering and Soil Development in the Earliest Land Plant Biospheres, Ria L Mitchell, Swansea University

2018-2019

September 7, Exposure to airborne magnetite pollution nanoparticles: a possible environmental risk factor for Alzheimer’s disease., Barbara Maher, Lancaster University

September 14, Ice in Equatorial Pangaea?, Lynn Soreghan, Univ Oklahoma

September 21, The Making of a Continent, Cin-Ty Lee, Rice U

September 28, Under the Feet of Dinosaurs: A New View of Late Cretaceous Landscapes Along the Margin of the Western Interior Seaway, Henry Fricke , Colorado College

October 5, Nitrogen Isotope Signatures of Phytoplankton Biomarkers: Connecting Intracellular Metabolites to Large-Scale Biogeochemical Trends, Jenan J. Kharbush, Harvard

October 19, New Insights into the Mechanics of Glacier Beds from Time-Dependent Surface Velocity Fields, Brent Minchew, MIT

November 2, An Organic Geochemical Perspective on Peatlands and Paleoclimate, Phil Meyers, University of Michigan

November 16, Fish out of water: Did Our Earliest Ancestors Walk Onto Land?, Stephanie Pierce, Harvard

November 30, "Vandervoo Lecture: Paleomagnetic Insights on Long-term Evolution of the Core,  Mantle,  and Surface Environment", David Evans, Yale

December 7, Testing UV-B Radiation as a Proposed Driver of the End-Permian Biotic Crisis, Cindy Looy, Berkeley

January 11, The Science of Earthquake Forecasts, John Vidale, USC/SCEC

January 18, The Geologic History of Seawater _18O, Itay Halevy, Weizmann Institute of Science

February 1, The Mineral Physics Test Kitchen: Finding the Recipe for Lower Mantle Heterogeneities, Susannah Dorfman, Michigan State

February 8, Using Cr-Redox Systematics in Basaltic Liquids and Olivine to Decode the Oxidation State of Planetary Basaltic Magmas and their Mantle Sources, Aaron Bell, University of Colorado Boulder

February 15, Hydrologic Science and Uncertainty Assessment, Andrew (Drew) Gronewold, University of Michigan

February 22, Metabolites of the Ocean Carbon Cycle, Mary Ann Moran, Univ Georgia

March 1, "Was Ancient Mars Warm and Wet or Cold and Icy? Mineral Signatures of Climate in Rover,  Orbiter,  and Terrestrial Analog Studies", Briony Horgan, Purdue

March 15, Dorr Lecture: Sharpening our View of Active Faulting Processes with High Resolution Topography, Ramon Arrowsmith, Arizona State

March 22, Porphyry Copper Deposit Formation in Arcs: What are the Odds?, Jeremy Richards, Laurentian University

March 29, A Growing Threat to Global Water Resources and Food Security, Scott Fendorf, Stanford

April 5, The Stable Isotopic Fingerprint of Landscapes and Life, Andreas Mulch, Institute of Geosciences

April 19, The Rocky Road of Life on Earth: Microbial Mineral Dissolution,  Tropical Forest Nutrient Cycles,  and the Global Effects of Open Ocean Carbonate Production, Josh West, USC

2017-2018

September 8, Surface Water-Groundwater Exchange and Nitrogen Fate in Tidal Rivers, Audrey Sawyer, OSU

September 15, Quantifying Natural Hazards: From Earthquake Damage to Debris Flows, Victor Tsai, Caltech

September 22, The Colorado River,  Climate Change,  Drought,  and Implications for the Globe, Jonathon Overpeck, UM

September 29, Global Fresh Water Ages, Scott Jasechko, U Calgary

October 3, The CheMin X-ray Diffraction instrument: Design,  development and mineralogical results from its 5-year deployment on the Mars Science Laboratory Rover Curiosity, David F. Blake, NASA

October 6, The Atacama Desert: Lessons from a Waterless World, Jay Quade, U Arizona

October 13, Extreme Mechanics on the Surface of Our Planets, Ahmed Ettaf Elbanna, U Illinois

October 27, Distinguished Alumni Lecture: A Wholistic View of Biosphere 1 Through Biosphere 2, Joaquin Ruiz, University of Arizona

November 3, Humans & climate change: Insights from the African paleoclimate record, Jessica Tierney, University of Arizona

November 10, Novel Applications of Short-lived Radionuclides (Po-210/Pb-210 and Be-7) as Tracer and Chronometer in the Study of Ice/Snow Dynamics in the Western Arctic, Mark Baskaran, Wayne State

November 17, Science communication; gnitteg ti thgir, Martin Pepper, University of Arizona

December 1, Caribbean-South American Plate Boundary Zone (Trinidad/Tobago) Active Deformation,  Strain Partitioning,  Fault Reactivation,  Fault Creep and Influence of Petroleum Geology, John Weber, Grand Valley St

December 12, Mineral Exploration and Discovery in Africa,  and their Benefits to African Geoscientists - the Ivanhoe Perspective , David Broughton, Senior Advisor,  Exploration and Geology,  Ivanhoe Mines

December 19, Paleoenvironmental Insights from the Structure and Function of Extinct Plants, Jonathan Wilson, Haverford

December 26, Deep Crustal Structure of the Rocky Mountain Region from Seismic Observations,  Xenoliths,  and Local Studies of Exhumed Terranes, Kevin Mahan, University of Colorado,  Boulder

February 2, Mountain Building,  Strike-slip Faulting,  and Landscape Evolution in New Zealand's Marlborough Fault System, Alison Duvall, University of Washington

February 9, The Meandering Path from River Dynamics to Valley Form, Ajay Limaye, University of Minnesota

February 16, Liquefaction Hazard in the Built Environment: Numerical and Experimental Investigations into the Effectiveness of Liquefaction Mitigation Techniques, Jenny Ramirez, "University of Colorado,  Boulder"

February 23, What Does the Chemistry of Shallow-water Carbonate Sediments Tell Us About the Global Carbon Cycle Over Earth History?, John Higgins , Princeton

March 9, Dorr Lecture: Chemically-stratified Midwestern Lakes are Relevant to Precambrian AND Modern Global Biogeochemistry, Betsy Swanner, Iowa State

March 16, Seismic Investigation of the Magma System Beneath Laguna del Maule,  Chile,  Cliff Thurber, U. Wisconsin

March,  23, Tidal Tomography: What an often-neglected phenomenon known as Earth tides can tell us about buoyancy an the deepest part of the mantle, Harriet Lau, Harvard

March 30, Surprises in Iron Cycling at the Peru Margin, Phoebe Lam, UC-Santa Cruz, , April 6, Microbiomes and Metabolites in the Environment, Elizabeth Kujawinski, WHOI

2016-2017

September, 9, Anatomy of a Megathrust Plate Boundary Through the Earthquake Cycle, Susan Schwartz, UCSC

September, 16, Multi-scale process interactions in (eco-)hydrology, erosion and sediment transport, and floods, Valeriy Ivanov, U-Mich (Environmental Engineering)

September, 23, Salt Water Disposal (SWD) Wells: Advances in Evaluating their Environmental Impact, Ron Green, SRI

September, 30, Lithospheric Destruction During Continental Rifting: A Geochemical Perspective, Tyrone Rooney, Michigan State

October, 7, Sources and Reactivity of Terrestrial Organic Carbon to the Colville River Delta, Beaufort Sea, Alaska, Katie Schreiner, UMN-Duluth

October, 14, Investigating Landscape Evolution and Geochemical Processes in Antarctica (and beyond) Using Remote Orbital Spectroscopy, Mark Salvatore, UM-Dearborn

October, 21, Distiguished Alumn LectureThreads of Maize and Blue, John Greene

October, 28, The Impact of the Rise of Algae and Land Plants on Global Biogeochemical Cycles, Noah Planavsky, Yale University

October, 31, Photoferrotrophy and the Evolution of Earth Surface Chemistry and Life, Sean Crowe, University of British Columbia

November, 4, Changing World – Changing Exploration, John Thompson, CornellNovember, 11, Microbial controls on biogeochemical carbon cycling in marine sediments, Nagissa Mahmoudi, Harvard University

November, 14, Identifying Controls Over Nitrification in a Dynamic Coastal Ocean, Jason Smith, University of California Santa BarbaraNovember, 18, Manganese: Minerals, Microbes, and the Evolution of Oxygenic Photosynthesis, Jena Johnson, University of Colorado, Boulder

January, 6, Sexual Harassment in Academia: A Call to Action, Julie Libarkin , Michigan State University

January, 6, Achieving Equity in Earth Science Through the Sharing of Social Capital, Julie Libarkin , Michigan State University

January, 13, Southern African Climates, Agulhas Warm Water Transports and Retroflection, and Interocean Exchanges: an Overview of IODP Expedition 361, Sidney Hemming, Columbia

January, 20, Multi-scale Structures and Thermal Constraints at Earth's Core-mantle Boundary, Jennifer Jackson (Sturhahn), Caltech

January, 27, Robot-Enabled Research Efforts to Promote Resiliency and Sustainability of Geo-Systems, Dimitrios Zekkos, CEE UMich

February, 3, Recon and Implications of the November 14th Mw 7.8 Kaikoura Earthquake (New Zealand), Tim Stahl, EARTH

February, 10, Early Stages of Continental Rifting: Top-down and Bottom-up Perspectives, Sarah Stamps, Virginia Tech

February, 17, Van der Voo Lecture: Magnetostratigraphy of Upper Permian to Lower Triassic (?) Beaufort Group Strata, Karoo Basin, South Africa: Can We "See Through" the Early Jurassic Karoo Large Igneous Province Event? (And Other Musings), John Geissman, UT-Dallas

March, 10, Observing the Generation, Propagation and Dissipation of Internal Waves in the Ocean, Matthew Alford, University of California San Diego

March, 17, Dorr Lecture: Erosion Rates and Climate from the Cosmogenic Nuclide Perspective, Darryl Granger, Purdue

March, 24, Reconstruction of Topography and Lithosphere Dynamics Within the Basin and Range of Western North America Since 36 Ma, Bill Holt, Stony Brook University

March, 31, Throwing the Baby out with the Bathwater: The Meaning of the C and O Isotopic Record in Carbonates, Peter Swart, U Miami

April, 14, Exploring Climate Change Projections from the Ground Up: How Plants Shape Weather in a High CO2 World, Chris Skinner, EARTH

2015-2016

September 18, Gravity Never Sleeps: Recent Landslides in Colorado and Washington State, Jonathan Godt USGS

September 25, Imaging Mantle Melting and the Effect of Water beneath Island Arc Systems, Doug Wiens,Washington University at St Louis

October 2, Molecular geochemistry of redox proxies. Molybdenum speciation: The missing piece toward a new model?, Anthony Chappaz, Central Michigan University

October 9, Greenland’s Climate Past and Future: Insights from Paleolimnology, Yarrow Axford, Northwestern University

October, 16, Coseismic landslides associated with the 2015 Gorkha earthquake sequence in Nepal, Marin Clark, University of Michigan

October, 23, The Fossil Record of Plant Physiology & its Impact on the Evolution of Terrestrial Ecology and Environments, Kevin Boyce, Stanford University

October, 30, Tectonics of the Palaeozoic and Mesozoic Amalgamation of Central Asia and Surroundings, Celal Sengor, Istanbul Technical University

November, 10, Characterizing Earthquakes and Fault Mechanics at Various Scales, Yihe Huang, Stanford University

November, 13, Seismic Evidence for Thermal Anomalies and Water in the Mantle Transition Zone Beneath Antarctica, Erica Emry, Penn State University

November, 17, Title: Interrogating Structure, Dynamics, and Hazard in Subduction Zones, Erin Wirth, University of Washington

November, 20, The Importance of Phyllosilicate Deformation on the Spectrum of Fault Slip Behaviors, Melodie French, University of Maryland

November, 24, Large Earthquakes and Tsunamis: Observations, Models and Warning Systems, Diego Melgar, University of California, Berkeley

December, 4, The Mid-ocean Ridge Basalt Ferric Iron Crisis, Paul Asimow, Caltech

December, 11, Is the Universe a Lonely Place? A Plan to Survey our Stellar Neighborhood for Signs of Life, Shawn Domagal-Goldman, NASA Goddard

January, 8, Why it's better to be blue than green: Investigating the environmental drivers of cyanobacterial harmful algal bloom growth and toxicity in western Lake Erie, Tim Davis, NOAA/GLERL

January, 15, From Equator to Pole in a Cool Greenhouse: Reconstructing Late Cretaceous Climate, Sierra Petersen, UM EARTH

January, 22, Scientific Publishing in 2016: The Good, The Bad and The Ugly—Lessons Learned From 5 Years Watching Retraction, Adam Marcus, Center for Scientific Integrity

January, 29, Role of Serpentinites in Subduction Zones, Keiko Hattori, U. Ottawa

February, 5, Constraints from Fault Roughness on the Scale-Dependent Strength of Rocks, Emily Brodsky -, UCSC

February, 12, Global ocean circulation and the Southern Ocean: from plate tectonics through the ocean and ice to the atmosphere, Lynne Talley, Scripps

February, 19, Origin of Grand Canyon, Brian Wernicke, Cal Tech

March, 11, The Growth of the Himalaya and the Tibetan Plateau and the Effect of High Terrain on the Indian Monsoon, Peter Molnar, University of Colorado

April, 1, 140 Million years of Tropical Landscape Evolution, Carlos Jaramillo, Smithsonian

April, 8, From Earth to Stars: Planetary Interiors and a New Chemistry, Raymond Jeanloz, Berkeley

2014-2015

September, 12, Smart Clays: States, Dates and Rates, Ben van der Pluijm, UM

September, 19, The End-Permian Mass Extinction and its Aftermath: New Insights from Non-Traditional Isotope Systems, Jonathan Payne, Stanford

September, 26, Tracing the Evolution of Oxygen on the Early Earth, Kurt Konhauser, Alberta

October, 3, Lake Malawi:  An ancient Lake's Response to 21st Century Environmental Change, Erik Brown, Minnesota-Duluth

October, 10, Distinguished Alumnus Lecture: Geo Generations:A Sixty Year Account, Tom Tinker

October, 17, Geophysical and Geochemical Consequences of the Spin Transitions of Iron in Earth’s Deep Mantle, Jung-Fu Lin, U Texas

October, 24, Unlocking the Geological Archives of Intra-oceanic Subduction Initiation: a New View on Suprasubduction Ophiolites Evolution, Douwe van Hinsbergen, Utrecht

October, 28, Plant Wax Isotopes in Tropical Lake Sediments and What They Tell Us about the Ancient Maya, Peter Douglas

October, 31, Remote Analysis of Catastrophic Landslides Using Seismology, Goran Ekstrom, Lamont Doherty

November, 4, Water and Landscape Evolution: From Orographic Rainfall and Erosion to_Topographic Stress and Groundwater, Seulgi Moon

November, 7, Insights from U/Th on Modern Dust Deposition and Last Interglacial Deep Ocean Circulation, Christopher Hayes

November, 11, Water Cycle Dynamics on Multiple Scales: Perspectives from the Water and Data Scarce Middle East, Adam Milewski

November, 14, New Insights into Paleoclimate from Emerging Proxies, Aradha Tripati

November, 21, The Source and Migration of Natural Gas in Shallow Aquifers: Insights Provided by Noble Gas Geochemistry, Thomas Darrah, Ohio State UniversityDecember, 5, Iceberg Calving Dynamics, Mac Cathles, UM, AOSS

January, 9, An Overview of the USGS Volcano Hazards Program and the Need for a U.S. National Volcano Early Warning System, Charles Mandeville, USGS

January, 12, Geochemical Reaction Intermediates in Metal Redox Cycling, Benjamin Gilbert, Berkeley National Laboratory

January, 16, Serpentinization, Carbon, and Deep Life, Matt Schrenk, Mich State Univ

January, 20, Hydroclimate, Vegetation and Landscape Change in Eastern Africa: Perspectives from the Last Ten Million Years, Naomi Levin, Johns Hopkins Univ

January, 23, Water Cycling Across Aquatic Interfaces and Why They Matter from the Pore Scale to the Continental Scale, Bayani Cardenas, Univ Texas at Austin

January, 30, Clarifying Mammalian Responses to Climate Change: Lessons Learned from Deep-Time Experiments, Larisa Desantis, Vanderbilt University

February, 6, Biting Through Time: Integrative Analyses and Evolutionary Functional Morphology of Carnivoran Feeding Systems, Jack Tseng, American Museum of Natural History

February, 10, Studying Species’ Evolutionary Responses to Climate Change from the Pliocene to the Present-Day Biodiversity Crisis, Erin Saupe, Yale University

February, 13, The Impact of Deep Time Data on Evolutionary Analyses: Insights from the Fossil Record Mammals, John Finarelli, University College Dublin

February, 17, Beyond the ‘Age of Fishes’: a Deep-Time Perspective on the Other Half of Vertebrate Diversity, Matt Friedman, University of Oxford

February, 20, Earth's Unique Continents, Roberta Rudnick, U Maryland

February, 27, Linking Topography, Erosion, and Chemical Weathering in Earth’s Most Tectonically-Active Mountains, Isaac Larson, Caltech

March, 13, Elasticity and Sound Velocity of Iron Alloys: Implications for the Earth’s Core, Jin Liu, UT AustinMarch, 20, Extant Microbial Mats as Windows Into Ancient Ecosystems, Judith Klatt, Max Planck Institute for Marine Microbiology

March, 27, Geometric Morphometrics and Diagenetic Deformation of Fossils: A Case Study, Brandon Hedrick, Univ. Pennsylvania

April, 3, Origin and Evolution of the Nashoba Terrane in Eastern Massachusetts, and Connections with the Norumbega Fault Zone in Maine: Potential for a Late Devonian Triple Junction, Yvette Kuiper, Colorado School of Mines

April, 17, Internal Waves, Ocean Mixing, and the Thermohaline Circulation of the Ocean, Rob Pinkel, UC San Diego

2013-2014

September, 13, Volatiles in magmas - learning from laboratory studies about volcanic eruption, Harald Behrens, University of Hannover

September, 20, Are Long-lived Stratovolcanos Low-pass Filters for Magma Transport or is There a Highway from Hell?, Philipp Ruprecht, Lamont-Doherty

September, 27, New insights into trophic ecology of marine animals from compound specific isotope analysis of amino acids, Brian Popp, University of Hawaii

October, 4, Did Earth Lose its Balance Before the First Animals Evolved?, Adam Maloof, Princeton University

October, 11, The Pliocene Bouse Formation and Initiation of the Modern Colorado River, Jon Spencer, Arizona Geologic Survey

October, 18, East Texas Deep Bosser Sandstone, Amoruso Field, John J. Amoruso; Amoruso Petroleum Company, Houston Texas

October, 25, Enigmatic Proterozoic and Early Paleozoic Fossils Illuminated by Modern Algae and Bryophytes and their Microbiomes, Linda Graham, University of Wisconsin

November, 1, Observing the Ocean for Climate Research Using Autonomous Robots, Breck Owens, Woods Hole Oceanographic Institution

November, 8, Tracing groundwater transformation, immobilization, and transport using Cr, U, and Se isotope ratios, Tom Johnson, Illinois

November, 15, Visualizing the Ocean's Overturning with Surface 14C Measurements, Robbie Toggweiller, NOAA

November, 22, Drilling Deep Beneath Antarctic Ice to Reveal Past and Future Climate Changes, David Harwood, University of Nebraska

December, 6, Sea Spray Aerosol: Impacts of Chemical Composition on Climate-Relevant Properties in Marine Environments, Andrew Ault, University of Michigan School of Public Health

January, 10, Insights into plant evolution and paleoenvironments in past warm worlds, Selena Smith, University of Michigan

January, 17, Invasive Species, Mass Extinction, and Speciation: How Biogeography Impacts the History of Life, Alycia Stigall, Ohio University

January, 24, Earth-Moon Dynamics Recorded in a >3.7 Billion Year Old Tidalite, Isua Supracrustal Belt, Greenland, Linda Hinnov, Johns Hopkins

January, 31, Seawater Chemistry Since the Triassic Recorded in Fossil Corals, and the Magnesium Problem, Michael Bender, Princeton

February, 7, Kinetics of Sulfur Degassing during Decompression of Silicate Melts, Adrian Fiege, University of Michigan EARTH

February, 12, Stable Nickel Isotope Fractionation During Rock Weathering: New Insights into the Biogeochemical Cycle of Nickel, Lev Jacob Spivak-Birndorf

February, 14, The Earth has Music for Those Who Will Listen: Structure of the Deep Mantle from Earth’s Free Oscillations, Paula Koelemeijer

February, 19, Response of Regional Climate to Global Forcing: The Role of Synoptic-scale Weather Systems in Shaping Climate Change Over West Africa, Christopher Skinner

February, 21, Earth's Upper Mantle Hybridization by Chemical Heterogeneity: Implications for Genesis of Ocean Island Basalts and Ultra-potassic Arc Lavas, Ananya Mallik

February, 28, Dorr Lecture: Reconstructing the Wiring Diagram of Earth's Biogeochemical Cycles, Paul Falkowski, Rutgers

March, 14, Nutrient Cycling in Low-oxygen Marine Environments: Engineering Solutions, Invasive Species, Microbes, and Beyond, Daniel Reed, University of Michigan

March, 21, The Sea Level Fingerprints of (Ancient and Modern) Ice Sheet Collapse, Jerry Mitrovica, Harvard University

March, 28, Evaluating the Environmental Impact of Hydraulic Fracturing: Michigan as a Case Study, Brian Ellis, University of Michigan College of Civil and Environmental Engineering

April, 4, Cenozoic Extension, Volcanism and Plateau Uplift in Eastern Africa and the African Superplume, Andy Nyblade, Penn State

April, 18, Glacial Climate from Clumped Isotope Thermometry, Aradhna Tripati, UCLA

2012-2013

September, 14, Dynamics of subduction zones and the transport of water to the deep Earth, Peter van Keken, University of Michigan

September, 21, The World in 2050: Four Forces Shaping Our Northern Future, Larry Smith, UCLA

September, 28, Ecosystem Response to Rising Atmospheric Carbon Dioxide and Ozone: Synthesis of a Long-Term Field Experiment, Don Zak, University of Michigan

October, 5, Mass-dependent triple oxygen isotope variations in sedimentary rocks., Naomi Levin, Johns Hopkins University

October, 12, The fate of water in tropical clouds and the subtropical humidity balance, David Noone, Colorado/NCAR

October, 19, Death of a Megapredator, Whitey Hagadorn, Denver Museum of Nature and Science

October, 26, Frontiers in Molecular Biogeochemistry: Electron Transfer Dynamics in the Redox Cycling of Iron, Kevin Rosso, Pacific Northwest National Lab

November, 2, Probing Mid-Ocean Ridge Processes Through Deep Crustal Drilling, Doug Wilson, UCSBNovember, 9, Modeling the Effects of Thermodynamic Properties on Slab Evolution, Ikuko Wada, Virginia Tech

November, 16, How Much Water Erupts from Arc Volcanoes?, Terry Plank, Lamont-Doherty Earth Observatory, Columbia University

November, 30, Two Martian Enigmas: Flat Landslides and Waterless Megaripples, Dave Montgomery, University of Washington

March, 1, Early Plateau Growth in Central Tibet and the Subduction History of Greater Indian Lithosphere, Paul Kapp, University of Arizona

March, 15, Mineral-Aqueous Solution Interfacial Reactions and Their Impact on the Environment, Gordon Brown, Stanford

April, 5, Expansion of Oxygen Minimum Zones During Early Pleistocene Cooling, Rebecca Robinson, University of Rhode Island

April, 12, Visualizing the Ocean's Overturning with Surface 14C Measurements, Robbie Toggweiler, GFDL

April, 19, A Tale of Two Oceans: Unsupported 231Pa/230Th in Glacial and Recent Sediments from the Atlantic and Arctic, Jerry McManus, Lamont Doherty