This morning I talked with Nobel-prize-winning physicist John Mather and a few dozen high school students from New York, Kansas, Florida, and Ghana at the World Science Festival. In a testament to the maturity of videoconferencing technology, we actually had a fantastic conversation, which consisted in large part of the students peppering Mather about cosmology, his area of expertise. I remember well being 14 and thinking to myself, “So…wait a minute…if the universe is expanding, what’s it expanding into?” But I didn’t get to ask the person who built the COBE satellite that actually found some of the key evidence for the Big Bang. So I was a little jealous today.

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NPR’s Jon Hamilton has a nice piece on Einstein’s brain, and what might have made it special. The difference doesn’t seem to have to do with its neurons, but with the other cells of the brain, the glia. I wrote about the glia–what I called the dark matter of the brain–in this Discover column last fall.

Originally published June 2, 2010. Copyright 2010 Carl Zimmer.

Bacteria and other microbes suck up and blast out vast amounts of greenhouse gases. Over at Yale Environment 360, I take a look at how they will behave in a world warming up as we inject carbon dioxide into the atmosphere. Will they draw down some of the extra CO2, or will the heat spur them to spew out more? Or both? The answer isn’t clear yet, but it’s important. After all, it’s a microbial planet, and we just live on it. Check it out.

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Originally published June 1, 2010. Copyright 2010 Carl Zimmer.

Mandy writes, “I am actually a microbiologist, but my side interest is the trilobite. I went in thinking I’d just get a small black outline of a trilobite, and the tattoo artist was so excited that I wanted a trilobite, and insisted on designing something more complicated for me. So attached is a photo of my right foot. It’s like a pet trilobite that follows me everywhere.”

Click here to go to the full Science Tattoo Emporium.

Originally published May 29, 2010. Copyright 2010 Carl Zimmer.