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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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Strokes - Collaterals: 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: Feb 12, 2016
Scientist: Michelle Theus

Strokes - Collaterals

Strokes - Collaterals
After a stroke, a specialized network of blood vessels redirects the flow of blood in the brain.

Stealth Blood Vessels of the BrainAmbience; blood flow Blood flows through the network of arteries and veins of our body, bringing oxygen and nutrients to our cells. Strokes occur when there's a blockage in one of the arteries of the brain. The brain tries to repair this blockage by re-directing the flow of blood. I'm Jim Metzner and this is the Pulse of the Planet.Theus: Some patients are better able to reroute this blood flow than others. And the reason they're able to reroute the blood flow is because of a very specialized network of blood vessels called collaterals.Dr. Michelle Theus is an assistant professor in the College of Veterinary Medicine at Virginia Tech. She's been trying to unravel the secrets of the blood vessels of the brain and why some people have this collateral network of arteries and others don't.Theus: And so my research is focused on understanding what contributes to the density or the number of these bypass vessels that occur during development in our brain. How is it that when we're developing in utero, that these vessels form? What contributes to their maintenance throughout adulthood? And then as we age we actually lose these bypass vessels. They go away. What and how does this happen? So we look at mechanisms in the brain, where the vessels might be - because of a stroke - forced to provide a different avenue of rerouting blood flow. That might stimulate more collaterals to grow. In some patients, collaterals don't grow it all. In essence, I think that the more bypass vessels we have, the better we are being protected from stroke.We'll hear more about surviving strokes in future programs. I'm Jim Metzner and this is the Pulse of the Planet.