The violet filter on the Imaging Science System aboard Voyager 1 and 2Many years ago, I said to a colleague, “What a beautiful shirt! Royal blue is a good color on you.” She replied, “What do you mean blue? This shirt is purple!” After some experimenting, we discovered that we consistently differed on the line between blue and purple. In extending our experiments to co-workers, we found that I was the outlier—most people saw blue and purple more like my colleague. It turns out that such differences are real; the proteins that detect light in our eyes can be tuned to slightly different wavelengths, and we can each have slightly different ratios of the three proteins that allow us to distinguish colors. I really do see blue where most people see purple. (Do you? Here’s a Buzzfeed quiz.)

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My advice of the day?

Never pass up a chance to hang out with science teachers!

The occasion was the 2017 awards luncheon of the California Science Teachers Association (CSTA). The National Center for Science Education was being honored with the 2017 Distinguished Contributions Award, for our work supporting the California Science Framework review process, and our help in providing teachers with guidance about how to respond to the Heartland Institute’s mailing of misleading climate propaganda to California teachers. It was awfully nice of CSTA to recognize NCSE since in my view, it’s teachers who deserve the accolades.

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I spent Saturday wet, cold, but exhilarated nonetheless, on the National Mall, with some 40,000 other participants in the March for Science. NCSE was one of the earliest partners of the march, and our logo was prominently displayed on the big stage. There were dozens of speakers with stories that spanned generations and disciplines. NCSE didn't have a speaking role, but I found myself wondering what I would have said if we did.

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As an organization, NCSE is focused on science education—and as a 501(c)(3) non-profit organization, it tries to stay out of politics as much as possible. With the recent Republican National Convention making headlines though, politics was definitely on my mind this week (and no doubt your mind too!)

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A class action lawsuit over an ounce of pepper? Sounds crazy doesn’t it?

Screen grab from April 22, 2016: can you spot the problem?

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