Past event coverage

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Coverage begins in 2006 for the ScienceWriters meeting and 2009 for the AAAS meeting.

It may seem the sun wages a constant war against our skin. Harmful UV radiation burns us, damages our DNA, and can sow the seeds for melanoma. But the sun is essential to our healthy development and our immune systems, because sun-exposed skin produces Vitamin D. During the long-ranging human exodus from Africa, says anthropologist Nina Jablonski, Vitamin D levels in the body played a key role: driving the evolution of our species' skin color.