How
We Can Keep Plastics Out of Our Ocean
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Transcription:
8 million metric tons of plastic trash enters the sea
from land every year, the equivalent of five plastic bags filled with trash for
every foot of coastline in the world.
Across our ocean, plastic trash blows into
circulation, dispersed almost everywhere but concentrating in huge swaths in
the midst of global currents, breaking down into smaller and smaller pieces, ingested
by species across the marine world, and sinking to the bottom of the sea.
Ellen MacArthur: Anyone can make plastic anywhere in
the world and sell it anywhere else in the world.There's no design Paradigm,
there's no barriers. In order to solve the plastic packaging problem, we need
to effectively rethink the entire system from one which is linear—I take, make,
dispose—to one where it can be recovered and fed back into the economy as a
valuable plastic material, or one where it is bio benign, and it can enter the environment.The
ultimate goal of the new Plastics economy is to design an economy where plastic
packaging never becomes waste, and to do that, we need every single player in
the chain to change the way that they do things.
But marine pollution comes in many forms:industrial,
agricultural, and urban waste also sweep into the sea, fueling explosions of
algae that rob marine ecosystems of the oxygen they need to survive.
With sustained pollution, these areas become dead
zones, which already exist in more than 400 locations across the globe.
But nutrient pollution can be managed through change
in major contributing systems like agriculture.
Michael Heller: If you eat, you're involved in
agriculture, so it's a problem that all of us have to work together to solve.
Soil health is critical for water quality; it's the first thing we have to
focus on. Here on the farm, organic matter is the key thing that we try to
improve.The more organic matter you have in the soil,the better the soil can
hold on to nutrientslike phosphorus and nitrogen.Organic matter keeps it from
leeching out of the soil; it grabs onto it, and that's good for the farmer, but
it's also good for water quality in the bay. For any farmer to change their
system is tricky, and it takes a lot of work. I think all farmers want to; its
learning different processes, practices that allow you to do it effectively
that becomes a key.
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Questions:
1. What is the estimated amount of plastic entering
the sea annually, and how is it visually represented?
2. How does plastic pollution
affect marine ecosystems, and what are "dead zones"?
3. Why is soil health important for water quality, and
what role does organic matter play in this context?