SUPERIOR, Wis. – "Welcome aboard," Katherine York chirped, greeting the newest arrivals onto the SunSpot. "We ain't your mama. We ain't your teacher. But we will care about you!"
The passengers laughed, grabbing a seat inside the bus, which was parked outside the student union at the University of Wisconsin-Superior one recent afternoon.
It was finals week, and the stressed-out students closed their eyes and basked in the warm glow surrounding them. A row of light therapy boxes hung from the bus ceiling, producing a brightness often missing from the skies Up North during these dark and cold winter months.
This lack of sunlight took some getting used to for Katherine and her twin sister, Sue York. They grew up in Florida, the Sunshine State. But fate brought them both to live in the Duluth area, where they've embarked on a mission to lighten up Minnesota winters.
The bubbly duo who call themselves the Sol Sisters operate what is believed to be the only "light-therapy bus" around.
The sisters refer to the SunSpot as a mobile rescue unit. For them, the business is a labor of love.
"We want to do something worthwhile in the world, making a living helping people," said Sue York, who has struggled for years with seasonal affective disorder (SAD). "We call it spreading our rays of sunshine."
She came up with the idea for a bus equipped with light boxes to help herself and others combat the effects of SAD, a type of depression brought on by a change of seasons. Many people with SAD use light boxes to help treat their symptoms.