The Sixth Extinction: an Unnatural History
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Over the last half billion years, there have been five major mass extinctions, when the diversity of life on Earth suddenly and dramatically contracted. Scientists are currently monitoring the sixth extinction, predicted to be the most devastating since the asteroid impact that …
Over the last half billion years, there have been five major mass extinctions, when the diversity of life on Earth suddenly and dramatically contracted. Scientists are currently monitoring the sixth extinction, predicted to be the most devastating since the asteroid impact that …
Over the last half billion years, there have been five major mass extinctions, when the diversity of life on Earth suddenly and dramatically contracted. Scientists are currently monitoring the sixth extinction, predicted to be the most devastating since the asteroid impact that …
Genome sequencing enables scientists to study genes over time and to test the genetic variability of any form of life, from bacteria to mammals. Thanks to advances in molecular genetics, scientists can now determine an animal's degree of inbreeding or compare genetic variation o…
Paleobiologist Anthony D. Barnosky weaves together evidence from the deep past and the present to alert us to the looming Sixth Mass Extinction and to offer a practical, hopeful plan for avoiding it. Writing from the front lines of extinction research, Barnosky tells the overarc…
"Trilobites hold the distinction of being among the world's first dominant forms of complex animal life, arthropods that rank second only to the hallowed dinosaur in terms of their paleontological appeal. These bizarrely beautiful three-lobed creatures initially appeared in the …
"Trilobites hold the distinction of being among the world's first dominant forms of complex animal life, arthropods that rank second only to the hallowed dinosaur in terms of their paleontological appeal. These bizarrely beautiful three-lobed creatures initially appeared in the …
These great beasts, or "megafauna," lived on every habitable continent and on many islands. With a handful of exceptions, all are now gone. What caused the disappearance of these prehistoric behemoths?
