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Biological Annihilation: a Planet in Loss Mode

Biological Annihilation: a Planet in Loss Mode

If you’ve been paying attention to what’s happening to the nonhuman life forms with which we share this planet, you’ve likely heard the term “the Sixth Extinction.” If not, look it up.  After all, a superb environmental reporter, Elizabeth Kolbert, has already gotten a Pulitzer Prize for writing a book with that title.

Whether the sixth mass species extinction of Earth’s history is already (or not quite yet) underway may still be debatable, but it’s clear enough that something’s going on, something that may prove even more devastating than a mass of species extinctions: the full-scale winnowing of vast populations of the planet’s invertebrates, vertebrates, and plants.  Think of it, to introduce an even broader term, as a wave of “biological annihilation” that includes possible species extinctions on a mass scale, but also massive species die-offs and various kinds of massacres.

Someday, such a planetary winnowing may prove to be the most tragic of all the grim stories of human history now playing out on this planet, even if to date it’s gotten far less attention than the dangers of climate change.  In the end, it may prove more difficult to mitigate than global warming.  Decarbonizing the global economy, however hard, won’t be harder or more improbable than the kind of wholesale restructuring of modern life and institutions that would prevent species annihilation from continuing.

With that in mind, come along with me on a topsy-turvy journey through the animal and plant kingdoms to learn a bit more about the most consequential global challenge of our time.

Insects Are Vanishing

When most of us think of animals that should be saved from annihilation, near the top of any list are likely to be the stars of the animal world: tigers and polar bears, orcas and orangutans, elephants and rhinos, and other similarly charismatic creatures.

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Normalizing Extinction

Normalizing Extinction

Photo by Brian Gratwicke | CC BY 2.0

Several years back I had the good fortune of traveling through the rainforest in a remote part of Panama. Along the way I stayed in a small cabin at an ecolodge with the warm waters of the Caribbean Sea just steps away. There were no roads, televisions, or internet access, and no phones or electricity except in the main house. Out back was a trail that meandered through a dense forest brimming with tree frogs, sloths, iguanas, leaf cutter ants, and countless species of birds hopping from branch to branch. Just a couple feet into the water and I counted dozens of bright orange sea stars. And at night the sea shore came alive with biolumeniscent dinoflagellates, who would respond to my flashlight signals in short bursts of blue-green neon and the canopy was a cacophony of countless species in song. The abundance of life in that tiny corner of the world crowded out most signals of modern civilization.

But as with any trip like this, I eventually had to return home where the reality of “The Great Dying” is everywhere. Like climate change, the Sixth Mass Extinction, is not a hyperbolic, political trope. It is in fact the death of most complex forms of life on earth at our own hands. And by all accounts, with mass die offs of bees, coral, salmon, frogs and beyond, it is in full swing. Elizabeth Kolbert, author of The Sixth Extinction makes this plain:

“If we assume, very conservatively, that there are two million species in the tropical rainforests, this means that something like five thousand species are being lost each year. This comes to roughly fourteen species a day, or one every hundred minutes.”

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Olduvai IV: Courage
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Olduvai II: Exodus
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