The Chukchi Sea, a broad and shallow sea between Siberia and Alaska, has a profound influence on Arctic climate and on the supply of fresh water and nutrients to the Arctic Ocean. Join Scripps Oceanography geophysicist Neal Driscoll as he presents research findings from two Arctic cruises onboard the U.S. Coast Guard icebreaker Healy that provide intriguing new insightsinto the complex climatic and sea level history of the Arctic. (55 minutes)

Little is known of the initial phase of the sea turtle's lifecycle,especially the critically endangered leatherback. Ocean surface currents play an important role as "conveyer belts" for hatchlings, but these strong swimmers might still be able to influence their trajectories at sea. Join Scripps marine biology student Geoffrey Gearheart as he explains how scientists are determining the dispersal patterns and mechanisms of leatherback hatchlings of west Papua (Indonesia) and how this knowledge may help tailor more adequate conservation measures. (56 minutes)

Join oceanographer Kevin Brown as he describes the phenomena that we experience as "earthquakes" and relates what scientists understand about the physics of these sudden and at times catastrophic movements in the earthŐs crust. Learn how Brown and other Scripps scientists are using a variety of techniques to better understand when, where, and how earthquakes occur. (50 minutes)

Sharks have inhabited the oceans for more than 400 million years. Join shark expert Jeffrey Graham as he describes the adaptations that have allowed these magnificent creatures to thrive over the millennia. Learn how shark biologists study shark physiology, life history, and behavior for insight into what allows these animals to rank among the worldŐs most efficient predators. (57 minutes)

For time immemorial, humanity has looked at the world's oceans as a vast unending sea of resources, but imagine a Serengeti where the elephants and the lions are gone and the top consumers are termites and locusts. That is what is happening in the ocean. Join Dr. Jeremy Jackson as he considers the biological future of the oceans in the context of accelerated human disturbance. (28 minutes)

The sun dominates life on our Planet, yet we know astonishingly little about long-term variation in solar activity and how it might have influenced EarthŐs climate. Join Devendra Lal as he explains how chemical clues locked in Antarctic ice can reconstruct 1,000 years of solar activity and how this knowledge is critical to understanding EarthŐs climate history. (52 minutes)

Water is thicker than air and thus the dynamics of sound are vastly different in the sea. Join Scripps Institute's Jules Jaffe for a fascinating exploration of sound in the sea, and the amazing ways that science is using sound to probe the mysteries of the deep. (56 minutes0

While often treated as distinct and independent ecosystems, marine and terrestrial habitats are intimately connected through a number of pathways, both natural and unnatural. Join University of San Diego biological oceanographer and Scripps graduate Drew Talley, as he discusses the ways in which these linkages are formed (and broken), and how connectivity across academic, public, and government sectors can help us to better understand coastal habitats. (55 minutes)

How do seemingly harmless invertebrates and seaweeds defend themselves against predators? How do they ward off competitors for space and resources, or stop deadly infection by millions of marine microbes in seawater? Join Scripps Institutions' Melany Puglisi and find out the answer to these and other compelling questions about microbial pathogens in the marine environment. (40 minutes)

Polls show that between one-third and one-half of Americans still believe that there is "no solid" evidence of global warming, or that if warming is happening it can be attributed to natural variability. Others believe that scientists are still debating the point. Join scientist and renowned historian Naomi Oreskes as she describes her investigation into the reasons for such widespread mistrust and misunderstanding of scientific consensus and probes the history of organized campaigns designed to create public doubt and confusion about science. (58 minutes)

Join Charles Kennel, the Director of Scripps Institution of Oceanography in a fascinating review of how scientific understanding of the Aurora Borealis has developed, from the beginning of the scientific rEvolution to the modern space age. (49 minutes)

Join Mark Hildebrand on a journey from the open waters of the world's oceans to sophisticated genetics labs and ultimately to the incredible world of nanotechnology and marvel at ground-breaking applications he and his colleagues are finding for diatoms, one of the smallest and most important marine organisms. (49 minutes)

Brian Palenik describes how he and other marine scientists are exploring genomes to understand how Phytoplankton, the "plants" of the sea, have adapted to life in the oceans. (28 minutes)

Join Paul Dayton, co-author of the recent Pew Oceans Commission report on Ecological Effects of Fishing, for an eye opening view of the profound consequences fishing can have on marine ecosystems and the types of protection and restoration needed to improve these critically stressed environments. (48 minutes)

Travel with Scripps marine biologist, Dr. Jeffrey Graham, to swamps, jungles, and isolated islands where he probes the world of air breathing fishes and asks the question, why breathe air? (53 minutes)

Join Richard Somerville as he weaves critical findings in climate science into a compelling story, making the most important issues of our time understandable to all. (57 minutes)

Learn about the challenging research work of many of the fellowship students at Scripps. Hear three short presentations that represent a sampling of the broad spectrum of research work Scripps graduate students are conducting to understand climate change and its impact on Earth. (58 minutes)

Learn about the challenging research work of three outstanding fellowship students at Scripps on topics as diverse as climate science, coastal Geology|Earth Science, and deep-sea diversity as they share their research discoveries and their visions for the future of their disciplines. (59 minutes)

Learn about the challenging research work of several of the outstanding fellowship students at Scripps Institution of Oceanography. Explore topics such as antibiotics from the sea, the declining health of our oceans, mapping the seafloor, and factors affecting climate change. (57 minutes)

Join Jerry Bode and Warren Smith as they recount the fascinating history of the geological collections at Scripps. (57 minutes)