Here is a summary of this week’s activities: –UI Facilities Management, Building and Landscape Services are holding Campus Stewardship Days today 9-11 am. and tomorrow, 1-3 p.m. Volunteers will meet at the wooded area south of Boyd Law Building plant tree seedlings and remove garlic mustard. To volunteer, contact Shawn Fitzpatrick, shawn-fitzpatrick@uiowa.edu, 319-335-5107. Also as part of Earth Month, UI Landscape Services Tree Crew announced they have been using biodegradable, renewable, less hazardous canola oil in their chainsaws instead of petroleum-based bar and chain oil. “It always bothered me when cutting near water or wet pavement that you could see an oil slick from the petroleum-based bar and chain oil. I did a little research and found that many use canola (rapeseed oil) without sacrificing performance or affecting the saw negatively,” said Andy Dahl, UI arborist in Building & Landscape Services.