Welcome to brain Stuff production of I Heart Radio. Hi brain Stuff, I'm more in vogel bomb in. Today's episode is another classic from our archives. It's about the discovery in of bacteria that can eat certain types of plastic and thus break it down, giving us hope that we may one day be able to make a dent in humanity's plastic waste. These bacteria are still being researched. Scientists say, we're unfortunately still years away from being to put this
discovery into practical use, but it's still a fascinating discovery. Hey, brain Stuff, Lauren vogel Bomb Here. One of the amazing things about our universe is that nothing really goes to waste. For instance, you the incredible master work that you are happened to be composed of the trash that exploded out of a supernova. In every nook and cranny of the cosmos, the universe is reorganizing and reusing. It is the great
resaw cycler. Our planet recycles everything, water, carbon, nutrients of all kinds, So it stands to reason that we'd be really good at recycling stuff here on Earth. But we humans are only so so recyclers take plastic. We do a great job of digging up ancient deposits of carbon in order to make the stuff, which is recycling sort of. But since the nineteen forties, we've manufactured mind boggling amounts of a material that will likely hang out in the
environment for centuries, killing wildlife and leaching toxic chemicals. Only about ten percent of that is ever recycled. But in a Japanese research team discovered bacteria making some inroads into plastics recycling where we humans were failing. Poly Ethylene tarithalate, or PET plastics are everywhere, most notably in plastic soda and water bottles, and the bonds that hold its molecules
together are very strong. So it was something of a surprise when a colony of these bacteria were discovered in a Japanese landfill. But what's their secret? In a issue of the journal Proceedings of the National Academy of Sciences, an international group of researchers reported on the pet busting enzyme produced by these bacteria. Not only did they map the structure of the enzyme, but in the process of studying and tinkering with it, they also made it faster.
Turns out it was all a bit of an accident. Lead author Greg Beckham, senior engineer at the National Renewable Energy Laboratory, said in a press release. We hoped to determine its structure to aid in protein engineering, but we ended up going a step further and accidentally engineered an enzyme with improved performance at breaking down these plastics. What we've learned is that p E t A s is not yet fully optimized to degrade PET, and now that we've shown this, it's time to apply the tools of
protein engineering and evolution to continue to improve it. The goal of this research is to find a way to create an enzyme that works fast and to break down huge amounts of pet plastic into its component parts so it can be turned back into plastic bottles. One possible solution is to plant this mutant enzyme into bacteria that can withstand insanely high temperatures, which might break the plastic down ten to a hundred times quicker, or whatever it takes. Y'all,
we humans buy one million plastic bottles every minute. Reduce and recycle your plastic waste. But it also can't hurt to keep your fingers crossed for these bacteria to work out Today's episode is based on the article plastic eating enzyme, Maybe our Planet's New Hope on how stuff works dot Com. Written by Dslin Shields. Brain Stuffs production of I Heart Radio in partnership with stuff works dot Com and it's produced by Tyler Clay. Four more podcasts from my heart Radio.
Visit the iHeart Radio app, Apple Podcasts, or wherever you listen to your favorite shows.