Starbucks is giving away a cup of free coffee or tea on Friday in celebration of Earth Day.
According to a post on the company's website, a person who brings in a reusable mug or tumbler gets a free brewed coffee or tea. The tea can be hot or iced.
For people who don't have a travel mug or leave theirs at home and don't want to buy a new one, they can ask for a "for here" cup and Starbucks will pick up the tab.
During last year's promotion, more than 1.2 million people participated, the company said.
There are two Starbucks in University City:
: 6621 Delmar Blvd.
: 7640 Delmar Blvd.