And the skeptics keep chiming in…George Cody on arsenic life

Posted on December 7, 2010August 16, 2021 by Matt Kristoffersen

One of the challenges of writing on deadline is that people are not waiting every moment of the day to answer your questions. My Slate piece on arsenic life was based on a dozen or so responses from an overwhelmingly skeptical group of experts. And now, an hour after my story went live, I got a reply from George Cody, a chemist at the Carnegie Institution who co-authored a major 2007 “weird life” report. Rather than let this thirteenth comment molder in my inbox, let me share it with you. It’s a bit technical but illuminating. I’ve condensed it for clarity (my clips marked by ellipses)–

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Arsenic life: My take on the backlash at Slate

Posted on December 7, 2010August 16, 2021 by Matt Kristoffersen

Slate asked me to take a look at the scientific reactions emerging to last week’s big news about arsenic-based life. I got in touch with a dozen experts, and let’s just say, the results weren’t pretty. Check it out.

“This Paper Should Not Have Been Published”

Posted on December 7, 2010May 28, 2020 by admin

Slate, December 7, 2010

Link

On Thursday, Dec. 2, Rosie Redfield sat down to read a new paper called “A Bacterium That Can Grow by Using Arsenic Instead of Phosphorus.” Despite its innocuous title, the paper had great ambitions. Every living thing that scientists have ever studied uses phosphorus to build the backbone of its DNA. In the new paper, NASA-funded scientists described a microbe that could use arsenic instead. If the authors of the paper were right, we would have to expand our notions of what forms life can take.

Redfield, a microbiology professor at the University of British Columbia, had been hearing rumors about the papers for days beforehand.

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Of Arsenic and Aliens

Posted on December 2, 2010August 16, 2021 by Matt Kristoffersen

Rumors have been swirling this week about a press conference NASA is starting right now. Some people have speculated that they’re going to announce evidence for life on another planet.

Well, not quite. Scientists have found a form of life that they claim bends the rules for life as we know it. But they didn’t need to go to another planet to find it. They just had to go to California.

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The clouds are alive! My new podcast on aerobiology

Posted on November 29, 2010August 16, 2021 by Matt Kristoffersen

On my latest podcast, I explore the invisible ocean of life through which we swim every day: the air. I talk to Jessica Green of the University of Oregon about life in the clouds, in our houses, and everywhere in between. Gee-whiz science at its finest. Check it out.