If current rates continue, will humanity will have seen the eradication of

[jeff rockout]

one-half of Earth's biodiversity? With a human population approaching 6.8 billion,[41] the impact of humanity is felt in all corners of of the globe............... Overfishing, anthropogenic climate change, industrialization, intensive agriculture, clearance of rain forests and other activities contribute to a dramatically rising extinction rate.[42] If current rates continue, humanity will have seen the eradication of one-half of Earth's biodiversity over the next hundred years.[43]

Thats pretty quick considering it took a gazillion years for it to come about.