TY - GEN AU - Michaels,P J AU - Singer,S F AU - Knappenberger,P C TI - Analyzing ultraviolet-B radiation: is there a trend? SN - 0036-8075 PY - 2010///0702 N1 - Publication Type: Journal Article UR - https://doi.org/10.1126/science.264.5163.1341 ER -