Sacrifices made for science: Researcher Susannah Lerman (pictured) and colleagues gave free lawn-mowing to those who participated in the study.
Sacrifices made for science: Researcher Susannah Lerman (pictured) and colleagues gave free lawn-mowing to those who participated in the study. U-Mass Amherst
Sacrifices made for science: Researcher Susannah Lerman (pictured) and colleagues gave free lawn-mowing to those who participated in the study. U-Mass Amherst