Tanning to prevent Skin Cancer?

http://www.childrenshospital.org/newsroom/Site1339/mainpageS1339P1sublevel242.html

Researchers at the Children's Hospital of Boston have found an interesting new way to prevent skin cancer, by tanning the skin using creams that "switches on the tanning machinery" within skin cells as they put it, not by UV light which damages DNA leading to melanoma (skin cancer). This is expanding on what is already pretty common knowledge: people who tan easily or have dark skin rarely get sunburns, which is a precursor to skin cancer. Once I read this I became curious as to melanoma incidence rates by race, so I looked that up online and found this chart, which basically proves this point, darker people have less skin cancer incidence:

Race/Ethnicity Men Women
All Races 23.2 per 100,000 men 14.7 per 100,000 women
White 26.5 per 100,000 men 17.3 per 100,000 women
Black 1.1 per 100,000 men 0.9 per 100,000 women
Asian/Pacific Islander 1.6 per 100,000 men 1.2 per 100,000 women
American Indian/Alaska Native Not enough Data
Hispanic 4.4 per 100,000 men 4.4 per 100,000 women
from: http://seer.cancer.gov/statfacts/html/melan.html?statfacts_page=melan.html&x=13&y=16

So what these researchers aim to do is to make people who naturally do not tan (they specifically go into red heads) able to tan without UV exposure in order to prevent damage from UV rays. Also, the article mentions that this sunless tanning will make people less inclined to participate in risky behaviors that induce skin cancer, such as tanning in a salon or sunbathing at the beach. It would be pretty cool if this cream that they used is released to the public commercially or by prescription for those with a high risk of developing skin cancer, but research is still going on.

Also I found this cool website that allows you to perform a virtual knee replacement. It's kind of creepy cutting someone's leg open even though it is not real at all and animated. It talks you through all the steps of surgery and there's also a virtual hip replacement as well:

http://www.edheads.org/activities/knee/index.htm