Prof. Emeritus Diana Mason of the University of North Texas will presented two lectures at Texas Tech University on Wed, Oct 31st, 2018. There will be a General Public lecture (free) at 7:00 PM in CHEM building room 049 with refreshments served at a reception following the event. The public lecture is titled Texas Discoveries that Changed the World. At Noon, she will present a seminar to the faculty and students at Texas Tech in CHEM 113 Knowledge decay, diagnostic identifiers and persistence in general chemistry.