木曜日は、マリーのはてな日記/Marie the Scientist
「なぜレジ袋が有料なの？/Why do we pay for plastic bags?」
Why do we pay for plastic bags?
I went to a supermarket with my Mom today.
She forgot to bring her own eco-friendly shopping bag so we had to buy the store’s plastic bag.
Then I wondered.
Why do we have to pay for bags now?
They used to be free.
“If we don’t, fish in the ocean will die.”
“Fish will die?
“Oh, Umm, I don’t know the details but…”
Then the store’s manager passed by.
So I decided to ask him.
How can I help you today?”
“Mom says that we have to buy bags now because fish will die if we don’t.
Is that true?”
“So, if we pay for the plastic bags, fish won’t die?”
It’s more about using less plastic bags.
You see, plastic products like plastic bottles and containers for take-out food become trash in the ocean.”
“That isn’t true.
My teacher taught us we recycle plastic bottles.
They become sweaters.”
“You are a good student.
It’s true we recycle plastics now.
As your teacher said we can make clothes out of old plastic.
We can also burn plastic to make electricity.
But there is a lot of plastic trash that is just thrown away.
Later we find it in the ocean.”
“I didn’t know that.”
“This is just one example.
But sea turtles sometimes eat plastic bags because they think the bags are jellyfish.”
“The plastic bag stays in their stomach so the turtles think they are full and stop eating.
Then after a while, they die because they don’t eat.”
“Ah, that’s so sad.”
“Marie, have you heard of microplastics?”
“They are very, very small pieces of plastic.
Sometimes, less than 5 millimeters long.
Plastic bags are broken into small pieces by the sun, wind, or waves.
They become microplastics.”
“Do they kill sea turtles, too?
“Yes, and not only turtles.
Microplastics are everywhere in the sea now.
So the microplastics go into the bodies of fish when they are eating or even breathing.”
“It’s a bad thing for humans, too.
Do you like fish?”
“Yes, I love sushi.”
“If the fish has eaten the microplastics, then…”
“Ha, they are inside of me, too.”
That is why the three Rs are important.”
What are they?”
“They are Reduce, Reuse, and Recycle.
We need to make sure there is less trash.
That is why we ask customers to pay for plastic bags now.”
“I’ll be sure Mom doesn’t forget to bring our shopping bag.”
“Marie, I was listening to the conversation, you know.”
So that night, I went home and made a reusable bag out of an old shirt.
Well, I thought it was an old shirt.
I didn’t know it was my father’s favorite shirt.