![In a talk, Professor Harsh Mathur explained how to use the knot theory to discover 200,000 ways to tie a tie.](https://observer.case.edu/wp-content/uploads/2016/09/13015230_10153594654539021_1739868243960187589_n-1-900x280.jpg)
200,000 ways to tie a tie
Chris Nguyen, Staff Reporter
• September 23, 2016
Gravitational waves discovery creates opportunity for further study
Christopher Gittings, Staff Reporter
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The tree that time forgot
Julia Bianco, News Editor
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