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The sky appears blue to the human eye as the short waves of blue light are scattered more than the other colours in the spectrum, making the blue light more visible.
Cirrocumulus are a relatively rare cloud forming ripples which may resemble honeycomb.
Arcus clouds are low-level, wide ranging clouds typically associated with powerful storm clouds and thunderstorms.
Church leader Carl Whitewood of the Salvation Army church in Ramsgate, Kent, shares how he prepares and runs a night shelter to help stop avoidable deaths of rough sleepers in winter.
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