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From the Blog

Light touch- Veins near the skin's surface re-emit tiny amounts of red light, but lots of blue light (Source- MasazS:iStockphoto) .jpg

Why do veins look blue?

GREAT MOMENTS IN SCIENCE: Blood is red, but thanks to physics, chemistry and industrial relations, veins can look blue, explains Dr Karl.

With computerised re-pricing programs roaming the online book world it might pay to check out your local library (Source: livecal/iStockPhoto)

The world’s most expensive book

GREAT MOMENTS IN SCIENCE: A book selling for more than the US national debt? Dr Karl discovers that inflation has got nothing on automated pricing programs.

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