Showing results by author "David Quammen" in All Categories

As globalisation spreads and as we destroy the ancient ecosystems, we encounter strange and dangerous infections that originate in animals but that can be transmitted to humans. Diseases that were contained are being set free, and the results are potentially catastrophic. In a journey that takes him from Southern China to the Congo, from Bangladesh to Australia, David Quammen tracks these infections to their source and asks what we can do to prevent some new pandemic spreading across the face of the earth.

In the mid-1970s, scientists began using DNA sequences to reexamine the history of all life. Perhaps the most startling discovery to come out of this new field is horizontal gene transfer (HGT), or the movement of genes across species lines. For instance, we now know that roughly eight percent of the human genome arrived not through traditional inheritance from directly ancestral forms, but sideways by viral infection - a type of HGT. In The Tangled Tree David Quammen chronicles these discoveries through the lives of the researchers who made them.

Our understanding of the ‘tree of life’, with powerful implications for human genetics, human health and our own human nature, has recently completely changed. This book is about a new method of telling the story of life on earth - through molecular phylogenetics. It involves a fairly simple method - the reading of the deep history of life by looking at the variation in protein molecules found in living organisms. For instance, we now know that roughly eight percent of the human genome arrived not through traditional inheritance from directly ancestral forms, but sideways by viral infection.

When Soviet agent Viktor Tronko defected to the US in 1964, he made two intriguing claims: he insisted that Russia had not placed a mole inside the CIA, and that Lee Harvey Oswald had not been recruited to assassinate the president. Convinced that Tronko was working as a disinformation agent, the CIA furiously did everything they could to break him. But Tronko had one more surprise for them: he refused to break.

En esta obra de referencia internacional, David Quammen se sumerge en la historia reciente de esas enfermedades zoonóticas, y persigue su rastro en compañía de los mejores científicos del mundo en la selva centroafricana, las cuevas de China meridional o las azoteas de Bangladés, pero también en los sofisticados laboratorios cuyo personal investiga virus letales bajo las más altas medidas de seguridad.