Note: The Centers for Disease Control and Prevention continued to update its guidance following the publication of this post. The most up-to-date guidance can be found here.)  On December 27, 2021, the Centers for Disease Control and Prevention changed its guidance for some people who test positive for COVID-19. Instead […]

What should we make of the new CDC guidance for ...


From high-profile wildfires in the American West over the last several years, to visibly cleaner air during pandemic lock-downs, air quality is returning to the forefront of environmental concern. The air we breathe has direct impacts on human health and quality of life. Especially for people with respiratory concerns, sufficient […]

Air quality: from cities to space


researcher in protective clothing in flu lab 4
This post is by student science writer Rachael Lee. When Green Bay Packers quarterback Aaron Rodgers announced he’d tested positive for COVID-19, the news shocked football fans everywhere, in part because Rodgers had told the public he was “immunized.” Most people took that to mean he’d been “vaccinated.” However, Rodgers […]

“Immunized” or “Vaccinated”: What’s the difference?




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This is the first post written by student science writer Emma Roberts. While Madison’s residents soaked up the above-average October temperatures, the heat has given some plants mixed signals. Instead of entering dormancy for the winter, some species have begun to rebloom. The lilac plants that bring many to the University […]

Mid-October’s high temperatures come with a consequence for lilacs and ...


If you’ve ever been in the Wisconsin Institutes for Discovery the week of February 10th, you’ve probably heard of or witnessed Darwin Day, put on by the J.F. Crow Institute for the Study of Evolution. Every year, researchers across the University of Wisconsin–Madison campus come together on the father of […]

Darwin Day switches virtual for the first time over pandemic ...



This post to us comes from Dr. Jim Lattis, director of UW Space Place. On December 21, Jupiter and Saturn, now in our evening sky as they have been for months, will appear very close together — so close that, depending on your visual acuity, you might need binoculars or […]

Planetary rendezvous: The grand conjunction of 2020


This post was written by student science writer Mary Magnuson The morning of December 2, the Madison skyline looked considerably different — as if the city had been transported out west, where mountains and mesas tower. In an image captured by Cooperative Institute for Meteorological Satellite Studies atmospheric scientist Tim […]

Rare mirage dominates Madison skyline


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Student science writer Mary Magnuson wrote this post. When spring turns to summer, there are three things to count on: longer days, warmer weather and the return of monarch butterflies. Every year, thousands of monarchs make their way down south to Mexico in the early fall, where they wait out […]

As monarchs arrive in their summer ranges, citizen scientists aid ...