Parts of the ocean are being starved of oxygen by chemical pollution from land. These so-called “dead zones” not only decimate marine life, but are contributing to climate change.
00:00 - How “dead zones” threaten the ocean
00:52 - Why was there “sea snot” in Turkey?
03:20 - What causes low oxygen in the ocean?
05:50 - How nutrients pollute the ocean
06:37 - Why farming is one of the main polluters
08:46 - The bizarre harm to marine life
10:24 - How “dead zones” contribute to climate change
12:07 - How regenerative farming can reduce pollution
16:00 - Nutrient pollution must be tackled urgently
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The Economist explains: How many oceans are there? https://econ.st/3qbmmRt
Can conservation save the ocean? Watch our film: https://econ.st/31XDTE2
Sir David Attenborough and four other leading thinkers discuss how they would use $1bn to save the ocean: https://econ.st/3GF8qp9
Watch our film about how to stop plastic getting into the ocean: https://econ.st/3IPyK22
The known unknowns of plastic pollution: https://econ.st/3dNyEcO
Covid-19 has led to a pandemic of plastic pollution: https://econ.st/3ykJhgK
Watch our film about whether eco-tourism can help save the ocean: https://econ.st/3DXKxHW
How overfishing is harming the ocean: https://econ.st/31Y8gdq
The world is waking up to the scourge of illegal fishing: https://econ.st/3dMl0GL
Where is the most over-fished sea in the world? Watch our film to find out: https://econ.st/3IFd5JL