CT Post | RPI to host regional engineering fair this weekend mySanAntonio.com TROY, N.Y. (AP) — Rensselaer Polytechnic Institute in Troy is hosting an engineering fair for high school and middle school students this weekend. Organizers say more than 150 students from the area will take part Saturday in the 25th Annual Greater ... Science Fair Showcases Loudoun's Brightest Young Minds |