Trash in the Los Angeles River, en route to the ocean. Photo: kqedquest.

Plastic bottles, aluminum cans, plastic knives and forks, tangled fishing line, plastic bags, food wrappers, cigarette butts… all this and more will be collected from California’s beaches this coming Saturday, September 25, on Coastal Cleanup Day.  On last year’s Coastal Cleanup Day, volunteers collected over 1.4 million pounds of trash from California’s beaches and waterways. That is a mind-blowing amount of trash!

All this trash has a devastating effect on ocean life. Sea turtles eat plastic bags, mistaking them for jellyfish. Marine mammals get tangled in abandoned fishing nets. Sea birds are found with bellies full of colorful plastic shards. And, plastics can leach chemicals into ocean water. Bisphenol A, the chemical in hard plastic water bottles, has been found in seawater. Bisphenol A and other chemicals can mimic animals’ hormones and disturb their development. It can also bioaccumulate in fish and shellfish—and could potentially end up on our dinner plates.

The trash that washes up on our beaches is only a tiny fraction of the debris in the ocean. Check out QUEST’s TV Story, Plastic in the Pacific, to get a sense of the Pacific Ocean Garbage Patch. This collection of trash, caught in a gyre in the middle of the Pacific Ocean, is perhaps twice the size of Texas. It isn’t just floating plastic water bottles—it’s also a soup of tiny, confetti-like fragments of plastics that have started to break down, but will never completely disappear.

Coastal Cleanup Day is a great opportunity to clean up California’s coasts and prevent this trash from getting swept out to sea. It also sends a message: people care about minimizing the impact of trash on the environment. Last year, over 80,000 people volunteered on Coastal Cleanup Day. To find locations where you can volunteer this Saturday morning, look here.

Ultimately, we need to decrease the amount of trash we produce. In Germany, a policy was put in place in 1991 that made manufacturers and stores responsible for recycling all the packaging material for the products they make and sell. Customers unwrapped their purchases at the checkout stand and left all the wrappers at the store. (My dad tried this at home in Virginia—it didn’t go over so well.) This forced German manufacturers and retailers to create a recycling program to deal with all the trash, and provided a strong incentive to reduce the amount of packaging they used in the first place. A few California cities are off to a good start with localized bans on plastic bags. Let’s come up with other ways to ensure that in the coming years, volunteers on Coastal Cleanup Day will have less work to do!

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Humans produce 500 billion plastic bags annually.

In China, they recently banned it. Australia, Bangladesh, Ireland, Italy, South Africa,Taiwan, Mumbai and India have either banned it or discouraged its use by raising taxes. And on March 27, 2007, San Francisco became the first city in the USA to ban it from large grocery stores.

More people are ditching plastic bags on a local and national level with good reason: we produce about 500 billion plastic bags world-wide, and less than one percent of that is recycled.

A recent QUEST report shows that plastic bottles are straining our environment, too: each year the USA alone produces 50 billion plastic bottles. Some would say to switch from plastic to paper bags – but reports show that paper bags aren't the most sustainable solution.

Plastic can have a longer shelf-live than humans do: it can persist in the environment for anywhere between 20 to 1,000 years. But a 16-year-old from Waterloo, Canada figured out to decompose it in only six weeks.

Daniel Burd, a student at Waterloo Collegiate Institute, discovered the key to decomposing plastic bags for a school science fair. Needless to say, he won.

"Almost every week I have to do chores and when I open the closet door, I have this avalanche of plastic bags falling on top of me," said Burd to The Record, a Waterloo newspaper. "One day, I got tired of it and wanted to know what other people are doing with these plastic bags."

First, Burd decided to isolate the microbes that break down plastic in polyethelene plastic bags. Burd ground plastic bags into powder and created a solution to break it down using tap water and yeast. Six weeks later, he found that the plastic weighed 17 percent less than the control group.

Burd then isolated the effective strains that caused the degradation – Sphingomonas and Pseudomonas – and tried the experiment again, adding sodium acecate.

Six weeks later – as opposed to 1,000 years – the plastic decomposed by 43 percent.

For his final report, Plastic Not Fantastic, Burd wrote that his process of polyethylene degradation can be used for large-scale plastic bag biodegradation.

"As a result, this would save the lives of millions of wildlife species and save space in landfills," wrote Burd.

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