Fresno State physics students and professors are again providing San Joaquin Valley schoolchildren a firsthand look at the science behind lying on a bed of nails, spinning like an Olympic ice skater and making ice cream using liquid nitrogen. At 11 a.m. Wednesday, July 11, they will present the physics demo for students in the 100 After School University program in McLane Hall, Room 162. INFO: 559.278.2371.