David Katz was worried about all the plastic(塑料) going into the sea. To help stop the problem, he had a special idea —the "Plastic Bank".

Mr. Katz thinks that the main reason(理由) for the plastic problem is worthless. People don't know how to put plastic into use in their life. In poor countries, people are working so hard just to get enough food to eat, to find a place to live, and to keep themselves healthy. They don't have time for recycling(回收利用).

The "Plastic Bank" helps the poor people with food and houses. When people recycle plastic, "Plastic Bank" pays them for recycling it.

The program began in 2015 in Haiti, a poor country with big problems with plastic. Haiti doesn't have good programs for recycling. People just put plastic here and there. It runs into seas.

"Plastic Bank" opened about 30 "markets" in Haiti. At "Plastic Bank markets", people can exchange(交换) the plastic for money or other things they need.

The "Plastic Bank" has programs in Haiti, Philippines and Brazil. In Philippines, it works to make "Plastic Bank markets" at 1,000 gas stations around the country.

Now, the "Plastic Bank" keeps about 7 million pounds of plastic out of seas.