Marc Morency, Quartermaster 1st class, USN, writes: “While I am by no means a scientist, I have been fortunate enough to be paid by the government to get ships from pt. A to pt. B serving in the US Navy as a Quartermaster. I was drawn to the navigation when I joined. In my opinion, it is the only job in the military that is both a science and an art. Celestial navigation has been something I have become profoundly interested in since I joined ten years ago. In this age of GPS, it is, in my opinion, more important now than ever for Navigators to remain proficient in the old ways to fix a ship’s position using a sextant and trigonometry. My tattoo is the visual depiction of how to plot a line of position from a celestial body using the altitude intercept method, a method which has been time tested for more than a century. For me it serves as a reminder that while technology improves, the sea remains an unpredictable place and it is up to the older generation to teach the younger the old school ways of doing business.”

Click here to go to the full Science Tattoo Emporium.

Originally published July 5, 2009. Copyright 2009 Carl Zimmer.

My publisher has been sending out copies of The Tangled Bank: An Introduction to Evolution to some leading biologists for possible endorsements when it comes out in October. Here’s what we’re hearing back so far…

“The Tangled Bank is the best written and best illustrated introduction to evolution of the Darwin centennial decade, and also the most conversant with ongoing research. It is excellent for students, the general public, and even other biologists.” —Edward O. Wilson, Harvard University, author of Consilience

Continue reading “The Tangled Bank: “The Best”–E.O. Wilson”

Fireflies are the topic of my story on the cover of the New York Times science section tomorrow. It’s the result of a visit I paid last Friday evening to a meadow in Massachusetts, where I listened to Sara Lewis of Tufts University explain the sultry, complex tale of sex, deception, and death that was playing out in front of me.

I first got to know Lewis’s work last summer, when I decided I wanted to include fireflies in my next book, The Tangled Bank: An Introduction to Evolution. Lewis co-authored a fascinating review of firefly biology last year (free pdf from Lewis’s web site). I particularly liked this chart, which shows how different species have evolved different flash signals.

Continue reading “Fireflies: The Invertebrate Opera”

The New York Times, June 29, 2009

Link

LINCOLN, Mass.–Sara Lewis is fluent in firefly. On this night she walks through a farm field in eastern Massachusetts, watching the first fireflies of the evening rise into the air and begin to blink on and off. Dr. Lewis, an evolutionary ecologist at Tufts University, points out six species in this meadow, each with its own pattern of flashes.

Along one edge of the meadow are Photinus greeni, with double pulses separated by three seconds of darkness. Near a stream are Photinus ignitus, with a five-second delay between single pulses. And near a forest are Pyractomena angulata, which make Dr. Lewis’s favorite flash pattern. “It’s like a flickering orange rain,” she said.

Continue reading “Blink Twice if You Like Me”