American political consultant and strategist Roger Stone discusses and signs copies of his new book, “Nixon’s Secrets: The Truth about Watergate and the Pardon.” Penn Bookstore. Info: 215-898-7595 or www.upenn.bncollege.com.
Led by an experienced volunteer guide, Winter Wellness Walks stick to the paved paths to get your heart rate up. Morris Arboretum. Walks occur weekly on Saturdays through March 29, 2014. Info: 215-247-5777 or www.upenn.edu/arboretum.
To mark half a century as one of the leading contemporary art museums in the world, the exhibition “ICA@50: Pleasing Artists and Publics Since 1963” animates the Institute of Contemporary Art’s past and propels it into the future. The ICA is celebrating the anniversary by examining lesser-known moments in contemporary art, engage today’s artists, commission new projects, and move toward the unknown. The show runs through Aug. 17. For a full list of artists included in the show, and details on free public events during the exhibition’s run, go to www.icaphila.org.
Penn vs. Yale. Penn Park. Info: www.pennathletics.com.