Everyone is familiar with knots. There are simple knots, such as those we master when we’re five-year-olds learning to tie our shoelaces.

IGL students Cora McVey, Anna Chlopecki, Tejo Nutalapati, Alan Zhou give a great talk about "The Four Color Theorem - Solving a 124 Year Old Problem" in the Champaign County History Museum Monthly Speaker Series.

The Illinois Geometry Lab hosted a Four Color-themed Open House for K-12 students and community members on Saturday, November 4 in the Alice Campbell Alumni Center.