DNA USA: A Genetic Portrait of America [Audiobook]
29 May 2016, 16:23
2012 | MP3@96 kbps + EPUB | 13 hrs 23 mins | 560.88MB
Crisscrossing the continent, a renowned geneticist provides a groundbreaking examination of America through its DNA.
The best-selling author of The Seven Daughters of Eve now turns his sights on the United States, one of the most genetically variegated countries in the world. From the blue-blooded pockets of old-WASP New England to the vast tribal lands of the Navajo, Bryan Sykes takes us on a historical genetic tour, interviewing genealogists, geneticists, anthropologists, and everyday Americans with compelling ancestral stories. His findings suggest:
- Of Americans whose ancestors came as slaves, virtually all have some European DNA.
- Racial intermixing appears least common among descendants of early New England colonists.
- There is clear evidence of Jewish genes among descendants of southwestern Spanish Catholics.
- Among white Americans, evidence of African DNA is most common in the South.
- European genes appeared among Native Americans as early as ten thousand years ago.
An unprecedented look into America's genetic mosaic and how we perceive race, DNA USA challenges the very notion of what we think it means to be American.
How the Universe Got Its Spots: Diary of a Finite Time in a Finite Space [Audiobook]
29 May 2016, 16:17
2009 | MP3@64 kbps | 7 hrs 22 mins | 204.43MB
Is the universe infinite, or is it just really big? Does nature abhor infinity? In startling and beautiful prose, Janna Levin's diary of unsent letters to her mother describes what we know about the shape and extent of the universe, about its beginning and its end. She grants the uninitiated access to the astounding findings of contemporary theoretical physics and makes tangible the contours of space and time--those very real curves along which apples fall and planets orbit.
Levin guides the reader through the observations and thought-experiments that have enabled physicists to begin charting the universe. She introduces the cosmic archaeology that makes sense of the pattern of hot spots left over from the big bang, a pursuit on the verge of discovering the shape of space itself. And she explains the topology and the geometry of the universe now coming into focus--a strange map of space full of black holes, chaotic flows, time warps, and invisible strings. Levin advances the controversial idea that this map is edgeless but finite--that the universe is huge but not unending--a radical revelation that would provide the ultimate twist to the Copernican revolution by locating our precise position in the cosmos.
As she recounts our increasingly rewarding attempt to know the universe, Levin tells her personal story as a scientist isolated by her growing knowledge. This book is her remarkable effort to reach across the distance of that knowledge and share what she knows with family and friends--and with us. Highly personal and utterly original, this physicist's diary is a breathtaking contemplation of our deep connection with the universe and our aspirations to comprehend it.
Spooky Action at a Distance [Audiobook]
04 May 2016, 23:56
2015 | MP3@64 kbps + EPUB | 8 hrs 42 mins | 237.55MB
What is space? It isn't a question that most of us normally stop to ask. Space is the venue of physics; it's where things exist, where they move and take shape. Yet over the past few decades, physicists have discovered a phenomenon that operates outside the confines of space and time. The phenomenon - the ability of one particle to affect another instantly across the vastness of space - appears to be almost magical. Einstein grappled with this oddity and couldn't quite resolve it, describing it as "spooky action at a distance". But this strange occurrence has direct connections to black holes, particle collisions, and even the workings of gravity. If space isn't what we thought it was, then what is it?
In Spooky Action at a Distance, George Musser sets out to answer that question, offering a provocative exploration of nonlocality and a celebration of the scientists who are trying to understand it. Musser guides us on an epic journey of scientific discovery into the lives of experimental physicists observing particles acting in tandem, astronomers discovering galaxies that look statistically identical, and cosmologists hoping to unravel the paradoxes surrounding the big bang. Their conclusions challenge our understanding not only of space and time but of the origins of the universe - and their insights are spurring profound technological innovation and suggesting a new grand unified theory of physics.