TribLIVE's Daily and Weekly email newsletters deliver the news you want and information you need, right to your inbox. Among the casualties that resulted from the start of the pandemic one year ago was the Carnegie Science Center’s Pittsburgh Regional Science & Engineering Fair, a tradition that began in 1940. The start of the covid-19 crisis made holding the fair, usually scheduled for March, impossible to do in person and organizers didn’t have enough days to put together a virtual alternative. So, it was canceled in 2020. Now the fair is back. This month, more than 400 students in grades 6-12 will compete for scholarships and cash prizes as they present their science, math and engineering research projects.