Look at some of the major latitudinal transgressions people from high UV areas going to low UV and vice versa.

Between 1520 and 1867, 12 million, 500 people were moved from high UV to low UV areas in the transatlantic slave trade.

This is three minutes of UV light.

Serious trauma patients are usually stabilised by the outlying facilities and then referred to the larger medical facilities.

Some of us with lightly pigmented skin live in high UV areas.

Some of us with darkly pigmented skin live in low UV areas.

National reports on existing and planned activities relating to ozone research and the monitoring, calibration and archiving of measurements and UV B monitoring and initiatives aimed at the prevention of UV B and sun related injuries.

Although the number of teenage pregnancies has stabilised over the last three years and even decreased in 2003, preventing teenage pregnancies continues to be a priority.

What's very, very important here is that the earliest humans evolved in high UV environments, in equatorial Africa.

The World Meteorological Organization's Global Atmosphere Watch monitoring programme global ozone and UV B radiation observing and monitoring system.

But the active irradiation, during the UV and for an hour after it, there is dilation of the blood vessels.

UV not only tans your skin but also sunburns it, so how to make the skin go through the military training, without sunburn?

So we put patients with these subjects under the UV, and their NO levels do go up, and their blood pressure goes down.

Now the really hot pink and red areas are those parts of the world that receive the highest amounts of UV during the year.

And when we shone UV at them, or when we warmed them up to the same level as the lamps, but didn't actually let the rays hit the skin, this didn't happen.

If we had UV eyes or X ray eyes, we would really see the dynamic and dramatic effects of our Sun's magnetic activity the kind of thing that happens on other stars as well.

And what we've shown is that doing a sham irradiation this is the thick line here this is shining UV on the arm so it warms up but keeping it covered so the rays don't hit the skin.

Nina Jablonski says that differing skin colors are simply our bodies' adaptation to varied climates and levels of UV exposure. Charles Darwin disagreed with this theory, but she explains, that's because he did not have access to NASA.

So we thought we'd just kind of model Different amounts of UV hit different parts of the Earth at different times of year, so you can actually work out those stores of nitric oxide the nitrates, nitrites, nitrosothiols in the skin cleave to release NO.

I had also had the privilege since the last 37 years to work on several masterpieces as you can see behind me, but basically to do what? Well, to assess, for example, the state of conservation. See here the face of the Madonna of the Chair that when just shining a UV light on it you suddenly see another, different lady, aged lady, I should rather say.

So when we want to learn whether a planet is habitable, whether it might be amenable to life, we want to know not only how much total light it receives and how warm it is, but we want to know about its space weather this high energy radiation, the UV and the X rays that are created by its star and that bathe it in this bath of high energy radiation.

Our bodies get Vitamin D from the sun, but as dermatologist Richard Weller suggests, sunlight may confer another surprising benefit too. New research by his team shows that nitric oxide, a chemical transmitter stored in huge reserves in the skin, can be released by UV light, to great benefit for blood pressure and the cardiovascular system. What does it mean? Well, it might begin to explain why Scots get sick more than Australians ...