Articles on UV light

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The UV Index was created last century largely for North American and European conditions, which rarely reach the ‘extreme’ range. Andy Cross/Flickr

Health Check: what does the UV Index mean?

Alongside the day's high and low, weather reports generally contain a UV alert for a particular time. But what does it actually mean – and what should you do about it?
International Agency for Research on Cancer has classified UV-emitting tanning devices as a Group I carcinogen – the most dangerous cancer-causing substances. Tanning bed via

Think indoor tanning is a safer alternative to sitting in the sun? Think again

Researchers have estimated that 8% of the five million cases of skin cancer diagnosed each year in the US can be attributed to indoor tanning.
This is bad, but it would be a lot worse without the ozone layer. garth.kennedy/Flickr

How does the ozone layer protect Earth from radiation?

SAVING THE OZONE: Part three in our series exploring on the Montreal Protocol on Substances that Deplete the Ozone Layer – dubbed “the world’s most successful environmental agreement” – explains why we…
Cotton coated with the superhydrophobic material repels a drop of water. Deakin University

Keeping clean easier with water-repellent coating

A new coating for cotton that is 1½ times more water-repellent than Teflon can survive for dozens of machine washes, say…

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