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John Delaney: Wiring an interactive ocean, 20:50 - TED July 2010 This talk by the oceanographer John Delaney (University of Washington) has a very interesting graphic (07:01), of how the movement and temperature of surface water in the world’s oceans directly influences the amount of rainfall, growth of vegetation, and cycles of drought affecting continental land masses and in particular California and the Sierra Nevada mountains. You can play this graphic back and forth to see these interactions between 1982 and 1998. There is also a good graphic of the world tectonic plates. https://www.ted.com/talks/john_delaney_wiring_an_interactive_ocean?language=en
Paul Greenberg: The four fish we’re overeating — and what to eat instead, 14:24 - TED Dec 2015 Author Paul Greenberg (bestsellers Four Fish, and American Catch), presents a significant summary of seafood and the environment in 2015. We currently take 160-180 million tons of seafood (including farmed fish) out of the world’s oceans every year. Of that great ocean harvest, the seafood which shows up in our supermarkets today is mostly shrimp, tuna, cod and salmon. Greenberg evaluates these species for input efficiency, productivity and sustainability. He also proposes a number of other species of seafood which are much more efficient and sustainable for us to grow and eat. The way we fish for popular seafood such as salmon, tuna and shrimp is threatening to ruin our oceans. Paul Greenberg explores the sheer size and irrationality of the seafood economy, and suggests a few specific ways we can change it, to benefit both the natural world and the people who depend on fishing for their livelihoods. (TED Introduction 2015)
Anote Tong: My country will be underwater soon — unless we work together, 21:15 - TED Nov 2015 Kiribati President Anote Tong’s presentation eloquently conveys the reality of overfishing, international fishing quotas, and climate change in the nation of Kiribati. This nation is one of the most productive sources of seafood for the world food market (60% of the world’s tuna). These fisheries have recently been closed to save these species from destruction by over harvesting. Recent changes in the world’s ocean currents are creating cyclones and storm surges in the equatorial regions of the world’s oceans which have never been seen in recorded history. Entire nations are at risk of being physically destroyed by these changes in ocean currents. For the people of Kiribati, climate change isn't something to be debated, denied or legislated against — it's an everyday reality. The low-lying Pacific island nation may soon be underwater, thanks to rising sea levels. In a personal conversation with TED Curator Chris Anderson, Kiribati President Anote Tong discusses his country's present climate catastrophe and its imperiled future. "In order to deal with climate change, there's got to be sacrifice. There's got to be commitment," he says. "We've got to tell people that the world has changed.” (TED Introduction)
Stephen Palumbi: Hidden toxins in the fish we eat, 15:42 - TED Jun 2010 Marine biologist Stephen Palumbi clearly and simply presents the flow and interconnection of ocean health and human health. The contaminants of PCBs, dioxins and mercury are discussed in the dolphin and whale meat we eat in sushi. These contaminants concentrate in the breast milk of dolphins, whales and humans (us). Palumbi graphically presents the influence of sewage and fertilizers which create red tides, dead zones and toxic poisoning in our seafood. What's link between the ocean's health and our health? Marine biologist Stephen Palumbi shows how toxins at the bottom of the ocean food chain find their way into our bodies — and tells a shocking story of toxic contamination in the fish market, where consumers were being tricked into buying fish that's not only mislabeled but unsafe. (TED Introduction 2010) https://www.ted.com/talks/stephen_palumbi_following_the_mercury_trail?language=en |