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5 posts tagged with evolution by jjray.
Displaying 1 through 5 of 5.

It's The A.C.C. People

WHY WE DON’T BELIEVE IN SCIENCE
posted by jjray on Jun 7, 2012 - 47 comments

0.0001 micromoles of oxygen per liter per year

If we look at how fast they metabolize, it would take them a thousand years just to reproduce themselves. They may be much older than this. There’s no way of knowing.

Microbes found deep under the North Pacific Gyre in 86-million-year-old red clay, potentially millions of years old, force us to rethink the timescales, ranges, and conditions that life can attain. (The main text of the paper is unfortunately paywalled.)
posted by jjray on May 19, 2012 - 34 comments

The walking cactus

Consider this animal, the newest fossil discovery from Jianni Liu in China. She calls it "the walking cactus." We have grasses and flowers and beetles in more varieties than you can imagine, and yet, in some deep architectural way, the developmental paths were set way back then, 500 million years ago. The Walking Cactus is just another souvenir of that crazy moment.
posted by jjray on Mar 1, 2011 - 68 comments

Past Thinking about Earth- Like Planets and Life

Past Thinking about Earth-Like Planets and Life [pdf], presenting a brief history of thought on finding extraterrestrial life-like phenomena, is the first chapter of James Kasting's new book, How to Find a Habitable Planet. He participated in a discussion on BBC's The Forum.
posted by jjray on Apr 29, 2010 - 27 comments

The Evolution of Morality

The Evolution of Morality explains morality from a framework of kin selection, reciprocity, and learning. [more inside]
posted by jjray on Apr 6, 2010 - 14 comments

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