Sunburns: The why behind the ouch (and how to avoid them)

To help us understand sunburns, we’re going deep into the skin to look at cells, molecules and electrons. We also explore the different ways to prevent burning in the first place. Plus, in our “moment of um” we tackle this question: What is the farthest that a human can see?

(Also: We’re giving away a book! You can enter for a chance to win here.)