Retired Professor Fren Tobiason, Ben Sonnenberg and Hannah Lansverk looks at birds new to PLU in the Fred Tobiason outdoor learning center behind the Anderson University Center on Friday, April 25, 2014.

Retired Professor Fren Tobiason, Ben Sonnenberg and Hannah Lansverk looks at birds new to PLU in the Fred Tobiason outdoor learning center behind the Anderson University Center on Friday, April 25, 2014.

Dr. Harold Leraas explains the use of the microscope in Histology class.

Burton Ostenson Professor in the Biology Department.

Small but vital points of an experiment come to light under the guidance of Dr. Earl Gerheim of the Biology Department