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skincancer.org
RO44
TIL there are more skin cancer cases attributed to tanning beds than lung cancer cases attributed to smoking.
PDyJ
TIL Sunscreen SPF is a very nonlinear metric. An SPF of 15 blocks 93% of incoming radiation, SPF 30 blocks 97%. SPF 50 blocks only 1% more than SPF 30, at 98%.
kded
TIL The number of skin cancer cases due to tanning is higher than the number of lung cancer cases due to smoking