Register for an account


Enter your name and email address below.

Your email address is used to log in and will not be shared or sold. Read our privacy policy.


Website access code

Enter your access code into the form field below.

If you are a Zinio, Nook, Kindle, Apple, or Google Play subscriber, you can enter your website access code to gain subscriber access. Your website access code is located in the upper right corner of the Table of Contents page of your digital edition.

Planet Earth

Visual Science: A Close Look at the Original Information Superhighway

A detailed microscope image shows the complicated structure of a fish's nervous system.

Image courtesy of Albert Pan/Harvard University | NULL


Sign up for our email newsletter for the latest science news

The Moment: Fluorescent proteins illuminate the neurons that sense touch, temperature, and pain in a live larval zebra fish. Each cell expresses a different color, allowing researchers to trace connections in the fish’s neural network. Images like this one help Harvard University neurobiologist Albert Pan study how zebra fish distinguish painful sensations from other sensory stimuli—work he hopes will provide insights into human pain.

The Shot: Pan took this digital image with an Olympus FluoView FV1000 con­focal microscope using a 20x objective and a photomultiplier tube.

    3 Free Articles Left

    Want it all? Get unlimited access when you subscribe.


    Already a subscriber? Register or Log In

    Want unlimited access?

    Subscribe today and save 50%


    Already a subscriber? Register or Log In