The Obama Presidential Center was dedicated today in a star-studded ceremony featuring everyone from former presidents to Grammy-winning artists. Chicago actor Harry Lennix is in town this weekend lending his booming voice to an orchestral performance. Illinois’ largest labor union, AFL-CIO, is putting off endorsing candidates running for office this fall. Nurses at Chicago’s Saint Mary of Nazareth Hospital this week voted to unionize. Plus, a tropical plant from Southeast Asia has taken root in Chicago. Pandan is the new go-to ingredient for local chefs.