Fun in the Sun Fun in the sun always comes with warnings –…

Fun in the Sun

Fun in the sun always comes with warnings – always apply a good sunscreen, with a cocktail of protective chemicals that block some of the sun’s UV light. Over-exposure might otherwise damage skin cells, and perhaps their DNA too, leading to cancers like melanoma. One detail that’s perhaps forgotten is how often to “cream up” – as its protective effect only lasts for a few hours. Spectators at a recent cricket test match in Australia were asked to trial a new skin-saving sticker, which changes colour to remind the wearer to re-apply. Worn of the hand here, ‘SPOTMYUV’ stickers change from colourless to purple as chemicals inside react to the sunlight. One side of these stickers are lathered with a sun cream, showing how its protection eventually wears off. These discreet devices could be just the thing to reduce the cases of melanomas, and sunburn, worldwide.

Written by John Ankers

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Dyke cutting Canary Islands, Spain | #Geology #GeologyPage #Dyke…

Dyke cutting Canary Islands, Spain | #Geology #GeologyPage #Dyke #Spain

The dyke morphology is diverse, ranging from massive to intensely fractured or crushed, from highly vesicular to low vesicularity and from straight to bendy. Orientations of individual dykes are usually constant at the outcrop scale, but local changes in strike, in dip or both have sometimes been observed.

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Azurite | #Geology #GeologyPage #Mineral Locality: Kamariza…

Azurite | #Geology #GeologyPage #Mineral

Locality: Kamariza Mines, Agios Konstantinos, Lavrion District Mines, Attiki Prefecture, Greece, Europe

Dimensions: 11.0 × 5.4 × 5.0 cm

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