Parents of teen accused over school shooting plead not guilty to involuntary manslaughter James and Jennifer Crumbley face charges of involuntary manslaughter after their son Ethan Crumbley allegedly killed four school students. Photograph: Oakland County sheriff’s department/EPA

Judge imposes combined $1m bond on James and Jennifer Crumbley

How to combine clean air and creativity Artist Alice Fitzgerald’s studio is at her family home, so she is very careful about air quality. Photographs: Al Higgins

Artist Alice Fitzgerald uses a mix of pungent materials in her studio. Air quality is a priority

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