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Two-thirds of our planet is covered in water, split into five distinct oceans, but in reality, Earth's seas are part of one huge global water system - a system that has been instrumental in shaping our destiny for millions of years. Now, however, in the 21st century, it is mankind that is shaping the destiny of our oceans. In unprecedented ways, humans are changing our seas and the life within. The ocean bed, the currents, marine life, even the water itself is transformed by what we are putting into our oceans.
2020 • Environment
Dr Helen Czerski reveals how shifting ocean water distributes heat and nutrients around the Earth. This process is linked to almost every aspect of human existence, and the lecture explores how dependent we are on the ocean for weather, food supply and connection between land masses - as well as exploring what needs to be done by humans to maintain this vital element of the Earth's ecosystem.
2/3 • BBC Royal Institution Christmas Lectures - Planet Earth: A User's Guide • 2020 • Environment
As global temperatures rise, scientists are exploring solutions from planting trees to sucking carbon out of the air to geoengineering. But would they work? And what are the risks of engineering Earth's climate?
NOVA PBS • 2020 • Environment
It begins when journalist Craig Leeson, searching for the elusive blue whale, discovers plastic waste in what should be pristine ocean. Craig teams up with free diver Tanya Streeter and an international team of scientists and researchers, and they travel to twenty locations around the world over the next four years to explore the fragile state of our oceans, uncover alarming truths about plastic pollution, and reveal working solutions that can be put into immediate effect.
2016 • Environment
Coral reefs are not just beautiful, they are also home to over a quarter of all marine life and are crucial to human societies around the globe. But as the climate changes and oceanic heat waves become commonplace, corals are bleaching and reefs are dying off. Now, marine biologists from across the world are teaming up to counteract this catastrophe with a technique called assisted evolution. Follow scientists as they attempt to crossbreed heat-resistant corals, and even transplant corals’ algae, in a race to save the coral reefs from extinction
NOVA PBS • 2021 • Environment
Earthquakes have always been a terrifying phenomenon, and they’ve become more deadly as our cities have grown — with collapsing buildings posing one of the largest risks. But why do buildings collapse in an earthquake? And how can it be prevented? Vicki V. May explains the physics of why it is not the sturdiest buildings, but the smartest, that will remain standing.