A better time until sunburn calculator: https://www.lesswrong.com/posts/vX2GP2fiFnkrWfNpw/a-better-time-until-sunburn-calculator (with some related discussion)
A better time until sunburn calculator: https://www.lesswrong.com/posts/vX2GP2fiFnkrWfNpw/a-better-time-until-sunburn-calculator (with some related discussion)