A new report from the World Wildlife Fund (WWF) reveals that population sizes of "mammals, birds, amphibians, reptiles and fish" are down by 68 percent since 1970, amounting to an "unprecedented" rate of destruction of Earth's diverse range of species.
The authors cite a number of reasons for the massive loss of wildlife including the industrial revolution, human population growth, increases in global trade and consumption, urbanization and climate change. The WWF argues that humans are overusing the planet's biocapacity by at least 56 percent, in the process polluting most of our oceans, destroying 85 percent of the area of wetlands and significantly altering 75 percent of the planet's ice-free land surface.
