There are a number of books out referring to how we’re in the midst of another mass extinction. I’ve recently finished reading “Scatter, Adapt, and Remember: How Humans Will Survive a Mass Extinction,” and have just picked up “The Sixth Extinction: An Unnatural History.”
As the promotional material for “The Sixth Extinction” explains:
Over the last half a billion years, there have been five mass extinctions, when the diversity of life on earth suddenly and dramatically contracted. Scientists around the world are currently monitoring the sixth extinction, predicted to be the most devastating extinction event since the asteroid impact that wiped out the dinosaurs.
(First of all, to the creationists: Yes, the Earth is billions of years old.)
But let’s look at what this really means. This is a chart of the total weight of land animals on Earth (via XKCD):
There aren’t that many wild animals left. Human behavior is killing everything. Mass extinctions take thousands of years. None of us will be around when the one we’re currently in is over, but more important, the way things are going, the human species may not exist when this mass extinction runs its course.