Chelsea Green Publishing

Chelsea Green Blog

New Species and The Progeny of Elephants

Lynn Margulis, author of Luminous Fish: Tales of Science and Love and Mind, Life, and Universe: Conversations with Great Scientists of Our Time, recently sat for an interview with Suzan Mazur at Scoop, an independent news site from New Zealand. Here’s an excerpt.
Suzan Mazur: Can you shed some light on what’s going on regarding the status and meaning of natural selection? Lynn Margulis: I think I see the problem clearly. There is absolutely no doubt that natural selection itself can be measured every minute of the day in every population of organisms. Darwin was brilliant to make “natural selection” a sort of godlike term, an expression that could replace “God”, who did it — created life forms. However, what is “natural selection” really? It is the failure of biotic potential to be reached. And it’s quantitative. Biotic potential is the intrinsic ability of any population to overgrow its environment by production of too many offspring. Whether born, hatched, budded or sporulated, all organisms potentially produce more offspring than can survive to reproduce themselves. Natural selection is intrinsically an elimination process. I’ll give you some specific examples. My favorite one – I show this in a film and people just gasp. An ordinary bacterium – Proteus vulgaris – divides at the rate of every 15 minutes. I have a time-lapse view of Proteus vulgaris where I show two hours of growth – 1, 2, 4, 8, 16, 32, 64, etc., until it fills the screen. I explain that if Proteus vulgaris continued to grow at this rate, not once a minute or once every 10 seconds, but once every 15 or 20 minutes, i.e., the way it really grows when it’s not limited, this bacterium would reach the mass of the Earth over a weekend. It’s easy to show that the biotic potential measured as “number of offspring per unit time” (convertible of course into its equivalent “number of offspring per generation”) is never reached. Ever. Darwin said the whole Earth could be covered by the progeny of a single pair of elephants.
Read the full article here.


The Future Is Hopeless, So Give it Your All

The never-ending national election in the United States, the “surprise” pro-Brexit vote in the United Kingdom, climate change … the list goes on and on about how easy it can be to lose hope in the future.Like many of life’s frustrations, or overwhelmingly large topics, most people in our society find themselves somewhere on the […] Read More

How Carbon Farming Can Save the Planet

Carbon farming alone is not enough to avoid catastrophic climate change, but coupled with new economic priorities, a massive switch to clean energy, and big changes to much of the rest of the way our societies work, it offers a pathway out of destruction and a route to hope.Along the way carbon farming can also […] Read More

Welcome to the Lyme Wars

Lyme disease infects a minimum of 300,000 people per year in the United States and millions more throughout the rest of the world. Symptoms run from mild lethargy to severe arthritis to heart disease to incapacitating mental dysfunction. Although tests have improved over the past decade, they are still not completely reliable, and antibiotics are […] Read More

Look Under Your Feet for Global Soil-utions

For several years, Chelsea Green has been publishing books that look under our feet for solutions to some of the most vexing problems facing the planet – hunger, drought, degraded farmland and grasslands, damaged waterways, and much more. Those books focus on (mostly) one thing: Soil.  In 2016, we’ve published two more important books that […] Read More

Feed Bees Biodynamically with Bee Tea

In this excerpt from An Unlikely Vineyard, Deirdre Heekin offers tips on how to biodynamically care for bees – just as they do everything else on the farm. Here, she provides a recipe for “bee tea” which is useful when feeding bees between winter and spring, when a hive has been robbed, or when starting […] Read More
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