requires prior specific permission andfor a fee. Request permissions from permissionseacm.org, ChswardS14. October 20-2a.201OrPorthodrOvegotRUSA. Consightithekibyths es. h.,.. ..sou.., lh...,.dtu ACM. A04970-1-1503-25tertrlittInAl0. hurifdx.dotorgil0.1145r266ttifir2661I55- deep in the dark— the power of snow