This week he publishes his 32nd book, Half Earth: Our Planet’s Fight for Life, in which he argues that we must set aside half the earth a preserve for non-human life. Claudia Dreifus interviews him in The New York Times:
Q. Why publish this book now?
A. Because a lifetime of research has magnified my perception that we are in a crisis with reference to the living part of the environment.We now have enough measurements of extinction rates and the likely rate in the future to know that it is approaching a thousand times the baseline of what existed before humanity came along.
Reading your book, one senses you felt a great urgency to write it?
The urgency was twofold. First, it’s only been within the last decade that a full picture of the crisis in biodiversity has emerged. The second factor was my age. I’m 86. I had a mild stroke a couple of years ago. I thought, “Say this now or never.”
And what I say is that to save biodiversity, we need to set aside about half the earth’s surface as a natural reserve. I’m not suggesting we have one hemisphere for humans and the other for the rest of life. I’m talking about allocating up to one half of the surface of the land and the sea as a preserve for remaining flora and fauna.
In a rapidly developing world, where would such a reserve be?
Large parts of nature are still intact — the Amazon region, the Congo Basin, New Guinea. There are also patches of the industrialized world where nature could be restored and strung together to create corridors for wildlife. In the oceans, we need to stop fishing in the open sea and let life there recover. The open sea is fished down to 2 percent of what it once was. If we halted those fisheries, marine life would increase rapidly. The oceans are part of that 50 percent.