Rebel Girls Climate Warriors: 25 Tales of Women Who Protect the Earth

Rebel Girls Climate Warriors: 25 Tales of Women Who Protect the Earth — page 5
6 ANGELINA ARORA INVENTOR One day Angelina was at the supermarket when the cashier asked her to pay for a plastic bag The cashier explained that plastic takes hundreds of years to decompose in landfills and that plastic bags often end up in the ocean So Australia had passed laws to help reduce plastic waste When it came time to do her ninth grade science project Angelina thought about what the cashier had said What if I could develop a more natural plastic a bioplastic that didn't harm the Earth she thought Angelina experimented with cornstarch potato starch and even old banana peels Nothing worked Then she went out for fish and chips and had a wild idea Looking down at a pile of shrimp shells tossed in the trash she noticed something The shiny almost see-through shells looked a lot like plastic What are they made of she wondered She soon learned that shrimp shells contain a material called chitin Some scientists were already using chitin to make bioplastics because it's sturdy and doesn't dissolve in water Plus there's a lot of it Australia produces 75,000 tons of seafood waste every year With so much material at hand it seemed silly not to make plastic out of shrimp After a lot of trial and error Angelina cooked up a recipe that combined chitin and a chemical found in silkworm cocoons Her bioplastic is unusually good It's strong flexible and foldable While most plastic takes 400 years to break down Angelina's takes just 33 days And it doesn't release harmful chemicals into the environment When Angelina's plastic breaks down in dirt it gives off a chemical that actually helps plants grow BIRTHDATE UNKNOWN AUSTRALIA