Sunburn

How long can I be in the sun? Wolfram Alpha has answer on this :

Reactor or radiator?

Tweets from Debb quite interesting :

https://twitter.com/thelittledebb/status/639038403724447744

https://twitter.com/thelittledebb/status/639038861432111105

https://twitter.com/thelittledebb/status/639039136834322432

https://twitter.com/thelittledebb/status/639042187502587905