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Announcing Sacred Mounds, a novel of Magical Realism and Historical Fantasy from Jim Metzner, with a foreword by Hutke Fields, principal chief of the Natchez Nation.
Cyclonic hordes of insects, a telepathic despot, body-swapping sex - just a few of the surprises Salvador Samuels encounters when he is swept back to pre-colonial times, walking in the moccasins of a blind Indian - who, in turn, has been transported into Salvador's body in present-day America. Sacred Mounds Book Cover Four hundred years apart, they are bound by a mission to rescue our world, aided by the mysterious presence of the mounds. Thousands of these ancient earthworks once dotted the landscape of North America. We still don't know why they were created. Sacred Mounds suggests they are as important today as when they were made over a thousand years ago. Sacred Mounds weaves the stories of two men, each a stranger in a strange land. With the help of two remarkable women, they must find a way to save our planet and return home.
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Nanopores: The Pulse of the Planet daily radio program offers free legal online mp3 downloads, exploring the world of sound in nature, culture and science, with audio adventures, world music, extraordinary sound portraits, science diaries, and nature ring-tones; an amazing sonic experience.



Airdate: Jan 24, 2018
Scientist: Amy Pruden

Nanopores

Nanopores
Reading strings of DNA like the beads on a necklace.

Transcript:
Nanopores

Scientists are finding news way to track antibiotic resistant bacteria. I'm Jim Metzner and this is the Pulse of the Planet.

Pruden: In order to monitor antibiotic resistance globally, it makes sense to zoom in on the DNA of the bacteria.

Amy Pruden is a Professor of Civil and Environmental Engineering, at Virginia Tech.

Pruden: We can begin to monitor the DNA that's in our drinking water, in our sewage, on our food. Every gene is different because it's made up of different components and we call the order of these components a DNA sequence. Up until recently, we didn't have a good way to break DNA down into its components. It's really just been the last decade that we've had the advent of what's called Next Generation DNA Sequencing. Where, for the first time, you can take DNA from an environmental sample, like water, air, or sewage, and directly put it on the instrument, and have it read back to you that DNA sequence.
If we want to study the DNA from bacteria, we have this new technology, called Nanopore Sequencing. These nanopores essentially act as a filter. They're very tiny, with and opening that's only a millionth of a millimeter wide, just wide enough to allow a strand of DNA to pass through. DNA is a long, stringy molecule and as that passes through the nanopore, it can read the sequence, like you would read the colored beads on a string.

Reading a bacteria's DNA sequence will help scientists monitor antibiotic resistance around the world. Pulse of the Planet is made possible in part by the Center for Earth and Environmental Nanotechnology and the National Science Foundation.