The Sixth Mass Extinction of Species
As the human population has swelled to 7.5 billion, our species’ massive footprint on planet Earth has had a devastating impact on mammals, birds, reptiles, insects, and marine life. We’ve driven thousands of species to the edge of extinction through habitat loss, overhunting and overfishing, the introduction of invasive species into new ecosystems, toxic pollution, and climate change. In the past 40 years, the number of wild animals has plunged 50 percent, a 2014 study found. And the World Wildlife Fund (WWF) estimates that populations…