Every year, harmful human practices destroy 2.7 acres of the Amazon rainforest, an invaluable environmental resource that seems to be slipping away.

So what hope is there for the rainforest and the population within? 

Scientists are looking to Project Piaba: a fishery initiative located on the Rio Negro tributary of the Amazon River, using piabas — tiny, minnow-sized fish to restore the resources of the Amazon.

Naturalist and journalist Sy Montgomery’s latest book, “Amazon Adventure: How Tiny Fish Are Saving the World's Largest Rainforest” explores the big impact these small creatures have in preserving the rainforest.

“This beautiful place is the lungs of the world,” Montgomery said in an interview with Boston Public Radio Tuesday, “and our No. 1 defense against global climate change.”

Montgomery and Amazon Adventure host Scott Dowd, who runs the freshwater gallery at the New England Aquarium and helped found Project Piaba, joined Jim Braude and guest host Andrea Cabral on Boston Public Radio to chat about the book, the project, and the ways these tiny fish are resisting the profound impact of human practices on climate change.

To listen to the full interview, click on the audio player above.