Mankind is a harmful species

unnecessary news from earth

The researchers from the universities Stanford, Princeton and Berkeley they claimed that vertebrates have disappeared faster 114 times than normally. According to research published in the journal “Science Advances”, more than 400 vertebrate species have become extinct since 1900. Such a dislocation, not 100 years, it needs to be seen in a 10-thousand-year period.

Accelerated modern human–induced species losses: Entering the sixth mass extinction

by Gerardo Ceballos, Paul R. Ehrlich, Anthony D. Barnosky, Andrés García, Robert M. Pringle, Todd M. Palmer

Science Advances  19 Jun 2015

Abstract

The oft-repeated claim that Earth’s biota is entering a sixth “mass extinction” depends on clearly demonstrating that current extinction rates are far above the “background” rates prevailing in the five previous mass extinctions. Earlier estimates of extinction rates have been criticized for using assumptions that might overestimate the severity of the extinction crisis. We assess, using extremely conservative assumptions, whether human activities are causing a mass extinction. First…

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