In the depths of winter, when conditions are just right, glittering clouds turn the polar skies into a spectacle of colour. Rainbow clouds – also known as ‘nacreous’ or ‘mother-of-pearl’ clouds after
WHAT CAUSES RAINBOW CLOUDS?
Are Cats Or Dogs Smarter?
Whether cats or dogs are cleverer is a perennial question. There's no denying dogs normally have bigger brains (especially if they're a bigger breed). But pooches also have more neurons – one golden retriever was found to have 623 million neurons in
