Ever wonder why the sky is blue, vs. say red, orange or purple? An effect called Rayleigh Scattering is part of the reason we ...

The answer is down to sunlight being made up of the seven colours of the rainbow - all of which ... that made the sky appear pink and purple. The weather alert service warns the public when ...

It might seem like a simple question. But the science behind a blue sky isn't that easy. For starters, it involves something ...