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what are whiskers

Find out how these specialised hairs help animals to sense their surroundings. ... read more

does chewing gum really stay inside you for years

Chewing gum is made from synthetic chemicals that the body can’t break down. ... read more

why don’t grains of salt stick together

Common table salt doesn’t clump thanks to the addition of anti-caking agents. ... read more

do fish sleep

Fish do go to sleep, but in a rather different way to humans. ... read more

what is humidity

Discover the cause of uncomfortable, muggy weather that leaves you sweating. ... read more