Fall 2014 & Spring 2015 Lecture Series
Next lecture: Friday, April 10 at 8:00 p.m.
Human Skin Color
Its Evolution and Relevance to Health and Human Society
Variation in human skin color has fascinated and perplexed people for centuries. As the most visible aspect of human variation, skin pigmentation has been used in the past as a basis for classifying people into races. Studies conducted in the past 25 years have shown that skin pigmentation is a biological adaptation that regulates the penetration of ultraviolet radiation (UVR) into the skin, and represents an evolutionary compromise between the conflicting demands of protection of the skin against UVR and of production of vitamin D by UVR.
The Lectures, which are the centerpiece of all Philosophical Society of Washington meetings, are selected to appeal to those with a general interest in science and do not require a specialized knowledge of the subject. They always contain information that is current, explanations that are understandable and a few controversial issues to be challenged by a critical listener. The series is designed as much as possible to include a wide range of disciplines.
The meetings are open to the public, free, and no reservations are required. Dress is informal. Meetings are followed by lively conversation. All must exit the Cosmos Club at 10:30 p.m. Conversations are continued at another location.
The John Wesley Powell Auditorium is adjacent to the Cosmos Club, 2170 Florida Avenue NW, Washington DC 20008. Entrance is through the club gate, the first right-hand entrance on Florida Avenue north of the intersection with Massachusetts Avenue NW. The auditorium entrance is to the left of the gate.
The Cosmos Club is within walking distance of the DuPont Circle Metro stop (Q Street exit), the Connecticut Avenue bus routes (L2, L4), and the Massachusetts Avenue bus routes (N2, N4).
|President||Larry S. Millstein|
|Program Chair||Larry S. Millstein|
|Membership Chair||Lloyd Mitchell|
|Corresponding Secretary||Robin Taylor|
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