We're pretty well aware of the negative influence humans have had on plants and animals around the world, and the footprint our modern living leaves.
But what affect are we having on bacteria? New research out of Australia has looked at the impact we're having on the tiny organisms in our world and it's made some unsettling discoveries.
Professor Michael Gillings tells us about how we could be damaging the ecosystems of trillions of germs through as we move them around the globe.
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