Recent Sightings On Earth Day, the world pauses
![Sunlight shines through a stand of pine trees at the University of Wisconsin-Madison Arboretum during spring on April 20, 2020. (Photo by Bryce Richter / UW-Madison)](https://news.wisc.edu/content/uploads/2020/04/image003-1024x681.jpg)
Sunlight shines through a stand of pine trees at the University of Wisconsin–Madison Arboretum this week.Today is Earth Day, which campus is marking with events and a virtual conference. UW–Madison alumnus Gaylord Nelson’s idea of a “national day for the environment” resulted in the first Earth Day 50 years ago on April 22, 1970.
Photo by Bryce Richter