Pale as a Ghost? Never Have to Worry About Sunburn? Here's Why

"Vulnerabilities: Skin colour map (indigenous people) predicted from multiple environmental factors"

How this is a "Vulnerabilities" is something of a mystery. A rational explanation would be that it shows where people with pale skin are most likely to get sunburned, and where people with full pigmentation may get vitamin D deficiencies. The global map is interesting, though. And, the UV protection/vitamin D production trade off for my ancestral homelands explains my own melanin deficiency.