FROM THE GUEST EDITORS • Changing Ocean Chemistry: An Introduction to This Special Issue
By Flip Froelich and John W. Farrington

Deep Ocean Carbonate Chemistry and Glacial-Interglacial Atmospheric CO₂ Changes
By Jimin Yu, Robert F. Anderson, and Eelco J. Rohling

Ocean (De)oxygenation Across the Last Deglaciation: Insights for the Future
By Samuel L. Jaccard , Eric D. Galbraith , Thomas L. Frölicher, and Nicolas Gruber

Was the Late Paleocene-Early Eocene Hot Because Earth Was Flat? An Ocean Lithium Isotope View of Mountain Building, Continental Weathering, Carbon Dioxide, and Earth's Cenozoic Climate
By Flip Froelich and Sambuddha Misra

GEOTRACES: Changing the Way We Explore Ocean Chemistry
By Robert F. Anderson, Edward Mawji , Gregory A. Cutter , Christopher I. Measures , and Catherine Jeandel

Quantifying the Impact of Atmospheric Deposition on the Biogeochemistry of Fe and Al in the Upper Ocean: A Decade of Collaboration with the US CLIVAR-CO₂ Repeat Hydrography Program
By Maxime M. Grand , Clifton S. Buck , William M. Landing , Christopher I. Measures , Mariko Hatta, William T. Hiscock, Matthew Brown, and Joseph A. Resing

A Dusty Planet
By Robert A. Duce

Anthropogenic Lead Emissions in the Ocean: The Evolving Global Experiment
By Edward A. Boyle, Jong-Mi Lee , Yolanda Echegoyen, Abigail Noble, Simone Moos, Gonzalo Carrasco , Ning Zhao, Richard Kayser , Jing Zhang, Toshitaka Gamo , Hajime Obata, and Kazuhiro Norisuye

Mercury in the Anthropocene Ocean
By Carl Lamborg , Katlin Bowman , Chad Hammerschmidt, Cindy Gilmour , Kathleen Munson, Noelle Selin, and Chun-Mao Tseng

In Praise of Marine Chemists
By Flip Froelich

Fukushima and Ocean Radioactivity
By Ken O. Buesseler

Scientific Outcomes and Future Challenges of the Ocean Carbon and Biogeochemistry Program
By Heather M. Benway and Scott C. Doney

Historical and Future Trends in Ocean Climate and Biogeochemistry
By Scott C. Doney, Laurent Bopp, and Matthew C. Long

Changing pH in the Surface Ocean
By Michael E.Q. Pilson

A Time-Series View of Changing Ocean Chemistry Due to Ocean Uptake of Anthropogenic CO₂ and Ocean Acidification
By Nicholas R. Bates , Yrene M. Astor , Matthew J. Church , Kim Currie, John E. Dore, Melchor González-Dávila, Laura Lorenzoni, Frank Muller-Karger, Jon Olafsson, and J. Magdalena Santana-Casiano

Particle Flux in the Deep Sargasso Sea: The 35-Year Oceanic Flux Program Time Series
By Maureen H. Conte and J.C. Weber

Interannual and Subdecadal Variability in the Nutrient Geochemistry of the Cariaco Basin
By Mary I. Scranton, Gordon T. Taylor, Robert Thunell , Claudia R. Benitez-Nelson , Frank Muller-Karger, Kent Fanning , Laura Lorenzoni, Enrique Montes, Ramon Varela, and Yrene Astor

A Plea for Temperature in Descriptions of the Oceanic Oxygen Status
By Peter G. Brewer and Andreas F. Hofmann

Oxygen Concentrations and Biological Fluxes in the Open Ocean
By Steven R. Emerson and Seth Bushinsky

Eutrophication-Driven Deoxygenation in the Coastal Ocean
By Nancy N. Rabalais, Wei-Jun Cai , Jacob Carstensen, Daniel J. Conley , Brian Fry, Xinping Hu , Zoraida Quiñones-Rivera, Rutger Rosenberg, Caroline P. Slomp, R. Eugene Turner , Maren Voss, Björn Wissel , and Jing Zhang

(Nearly) A Decade of Directly Measured Sediment N2 Fluxes: What Can Narragansett Bay Tell Us About the Global Ocean Nitrogen Budget?
By Robinson W. Fulweiler and Elise M. Heiss

Persistent Organic Pollutants (POPs), Polycyclic Aromatic Hydrocarbons (PAHs), and Plastics: Examples of the Status, Trend, and Cycling of Organic Chemicals of Environmental Concern in the Ocean
By John W. Farrington and Hideshige Takada

Organic Chemicals of Environmental Concern: Water Sampling and Analytical Challenges
By John W. Farrington

A Review of Observations of Floating Tar in the Sargasso Sea
By Andrew J. Peters and Amy N.S. Siuda

Sixty Years of Sverdrup: A Retrospective of Progress in the Study of Phytoplankton Blooms
By Alexis D. Fischer , Emily A. Moberg , Harriet Alexander, Emily F. Brownlee, Kristen R. Hunter-Cevera, Kathleen J. Pitz, Sarah Z. Rosengard, and Heidi M. Sosik

QUARTERDECK • What We Should Know in Relation to What We Do Know
By Donald L. Rice

FROM THE PRESIDENT • Preparing Our Graduate Students for a New World
By Mark R. Abbott

RIPPLE MARKS • Glass Palaces at the Bottom of the Sea
By Cheryl Lyn Dybas

THE OCEANOGRAPHY CLASSROOM • Why Teach What When?
By Tom Garrison

HANDS-ON OCEANOGRAPHY • Ocean Acidification: The Role of CO₂
By Jennifer L. Murphy and Christopher I. Measures

BOOK REVIEW • An Introduction to the Chemistry of the Sea, Second Edition
By Ana Aguilar-Islas

CAREER PROFILES • Options and Insights
Career profiles—Options and insights. 2014. Oceanography 27(1):249–250.

John W. Farrington, Woods Hole Oceanographic Institution
Flip Froelich, Froelich Education Service

Production of this issue of Oceanography was supported by the US National Science Foundation.