John Bruno, marine ecologist, associate professor, department of biology, University of North Carolina, Chapel Hill, Chapel Hill, N.C.
R. Steve Nerem, professor, department of aerospace engineering sciences, associate director, Colorado Center for Astrodynamics Research, University of Colorado, Boulder, Colo.
Hajo Eicken, professor, Geophysical Institute and the department of geology and geophysics, University of Alaska, Fairbanks, Fairbanks, Alaska
Margaret Leinen, transitioning to new position: executive director, Harbor Branch Oceanographic Institute, associate provost of marine and environmental initiatives,
Florida Atlantic University, currently: director, Climate Response Fund, Washington, D.C.
Steve Gaines, dean, Bren School of Environmental Science & Management, University of California, Santa Barbara, Santa Barbara, Calif.
Scientists who study the oceans say the effects of climate change are already being seen in the world's oceans. From acidification and warming temperatures to sea-level rise and sea-ice loss, Ira Flatow and guests look at how the oceans are changing with changes in climate.