Author Archives: Sandra Henderson

Every 4 years

30 days has September April, June, and November All the rest have 31 Except that quite contrary February That has 28 most of the time But in Leap Year 29! This childhood ditty crosses my mind often in February. Every … Continue reading

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Season Spotter shared at a recent science conference

Each December, thousands of scientists come together for the American Geophysical Union’s (AGU) annual conference making it the world’s single largest meeting of Earth and Space scientists. Each year, I leave this conference enthused, exhilarated — and exhausted! There is … Continue reading


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Thank you

As we celebrate a significant milestone in Season Spotter, I find myself reflecting on how we got here. It has now been four and a half years since Andrew Richardson and I began thinking about how to more broadly engage … Continue reading

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Biology teachers conference

Many professional societies hold conferences. Generally, attending a conference is a great opportunity to learn about emerging topics in your field, attend workshops, listen to presentations, view posters, and just spend time with others that share your interests and excitement. … Continue reading

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Making observations or classifying images: you can do both

I must admit, I have a bit of an obsession with plants and citizen science projects.  Not just any plant projects, but those that focus on plant phenology, the science of when plants flower, leaf, and fruit. One of the … Continue reading

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Doing something about climate change

My name is Sandra Henderson and I am the Director of Citizen Science at the National Ecological Observatory Network in Boulder, Colorado. For the past 25 years or so, I have mostly been working climate change education projects and activities. … Continue reading

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