Download 50 Ways the World Is Going to End: The Biggest Threats to by Alok Jha PDF

By Alok Jha

ISBN-10: 0857386123

ISBN-13: 9780857386120

Dying by way of Euphoria. Dysgenics. inhabitants dying Spiral. Genetic Superhumans. Geomagnetic Reversal. Galactic Collision. Strangelets. even if we adore it or now not, everything's going to return to a stunning disagreeable halt on our planet sooner or later sooner or later. What we do not comprehend is what shape our extinction is probably going to take. during this obtainable and exciting ebook, acclaimed author Alok Jha explains the head-spinning apocalyptic technology in the back of 50 scary doomsday situations.

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They had been looking at the rate and deposition of thousands of families of marine fossils from the past 500 million years and noticed a distinct set of periods when extinction rates among the life forms seemed unusually high. Later work confirmed Raup and Sepkoski’s conclusions that there had been some event or series of events that had caused catastrophic loss of life on Earth at several distinct points. Because of the timescales and uncertainties in the numbers of animals involved, big extinctions in the past are not measured only by the numbers of species that disappeared, but also by genera (the taxonomic category that contains several related species) and families (the category that contains several related genera).

Plants would die and food supplies would soon be exhausted. 03 percent of the world’s current arsenal—would throw enough soot into the atmosphere to create climatic anomalies unprecedented in human history. Tens of millions of people would die, global temperatures would crash, and most of the world would be unable to grow crops for more than five years. In addition, the ozone layer, which protects the surface of the Earth from harmful ultraviolet radiation, would be depleted by 40 percent over many inhabited areas and up to 70 percent at the poles.

Recovery of biodiversity will not occur on any time-frame meaningful to people,” says Barnosky. ” Past mass extinctions have been caused by major environmental events—shifting sea levels, asteroid impacts or rapid temperature changes. This time, however, animals and plants have something far more formidable and insurmountable to deal with as they die in numbers never seen before on Earth: us. Global Pandemic In the winter of 2009, the world was on edge. A strain of swine flu had emerged out of nowhere in Mexico and was advancing fast.

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