Small eukaryotic phytoplankton are far more important for taking up upwelled nutrients and for transporting atmospheric carbon dioxide into the ocean interior than their abundance implies.

The paper Climate change: helping nature survive the human response, published in the scientific journal Conservation Letters, looks at efforts to both reduce emissions of greenhouse gases and potential action that could be taken by people to adapt to a changed climate and assesses the potential impact that these could have on global ecosystems.

The oscillations during the past 2.5 million years between ice ages and interglacials were probably triggered by orbital changes, but the observed amplitude and timing of these climate cycles still awaits a full explanation. One notable correlation links lower partial pressure (or concentration) of CO2 with ice ages: changes in CO2 concentration may cause some of the ice-age cooling, but what causes the loss of CO2 is unknown. Daniel Sigman, Mathis Hain and Gerald Haug review the evidence in sup

The recipients include: Kevin Loutherback, Electrical Engineering; Dalin Shi, Geosciences; and Ann Carla Staver, Ecology and Evolutionary Biology.

As soon as it became clear that the Deepwater Horizon oil eruption was going to be gushing for a while, anyone with a basic understanding of regional ocean currents, from sea captains to oceanographers, began to wonder: what will happen if the oil gets into the Loop Current?

PEI Research and Center News from Spring/Summer 2010.

Freshman Sarah Bluher spent part of her spring break in the Florida Everglades collecting field samples from an airboat in a water conservation area.

A lot of scientists and conservationists find themselves questioning whether science got its due in the latest round of international negotiations on trade in endangered wildlife.

Rising acid levels in the world's oceans appear to be robbing the tiny animals that form the bedrock of the marine food web of a vital nutrient.

Though experts may dispute the role of human activity in climate change, evidence is mounting that temperatures and sea levels are rising.

PEI Research and Centers News from Fall/Winter 2009.

An additional 2 degrees of global warming could commit the planet to 6 to 9 meters (20 to 30 feet) of long-term sea level rise.

Daniel Sigman, a Princeton University biogeochemist who has conducted pioneering work exploring the large-scale systems that have supported life on the planet throughout the millennia, has been selected as a 2009 MacArthur Fellow.

After more than a decade of inquiry, a Princeton-led team of scientists has turned the tables on a long-standing controversy to re-establish an old truth about nitrogen mixing in the oceans.

Energy company BP has committed to a five-year renewal of a joint research partnership with Princeton University that identifies ways of tackling the world's climate problem.

After a competitive review process, Princeton University's Cooperative Institute for Climate Science has been selected as a collaborative research partner by the National Oceanic and Atmospheric Administration (NOAA).

Snorkeling practice in DeNunzio Pool may be an unusual activity for a freshman seminar, unless the class is going to the Sargasso Sea.

Humanity can't go on like this. Earth's climate is shifting, and it is all but certainly civilization's fault for burning fossil fuels and spewing greenhouse gases into the atmosphere.

PEI Professor François M.M. Morel has received the Einstein Chair Professorship from the Institute of Urban Environment (IUE), Chinese Academy of Sciences (CAS).

Sigman's research provides new evidence of a tight connection between high dust input to the Southern Ocean and the emergence of the deep glaciations that characterize the past one million years.