People often call the plastic bags "white pollution". It becomes (bad) invention for the humans because it is hard to break down. It (report) that it takes 100-200 years to break them down(complete). However, a 16-year-old high-school Canadian student called Daniel Byrd discovered that in one kind of mysterious single cell fungus may break down the plastic bag!
The idea of the invention came from his housework. He always helped his mother do the housework. Every time, he opened the closet, the plastic bags would fly out. This makes him very (angry). So he thought how to deal with these plastic bags. He knew the plastic bags were destroyed by the microorganism(微生物). So with his (teach) help, he found that he (put) the two germs(细菌) mixture up and that made the plastic bags break down quickly.
First, he made experiment—he mixed some earth germs and plastic bags together. After 12 weeks, he found the plastic bags were broken down. Then, he made another experiment. In the (nature) environment, these germs could work well. The experiment also showed that the plastic bags can be broken down in three months. And it only gave off some water and little carbon dioxide.
He wanted to go to college with the money he got the invention. And now he got about thirty thousand dollars. Also he got a lot of reward from many universities.
