Reaction wheels are useful things, typically used by satellites to keep themselves oriented the right way up in space. Turning the reaction wheel creates an equal and opposite torque in the spacecraft ...

Hairy tongue syndrome is the most common cause of a yellow tongue. Treatment for a yellow tongue often includes brushing daily and using a tongue scraper. Avoiding smoking and drinking less coffee and ...

On an ancient monument near Republique, fresh graffiti scars the old grey stone - its garish scrawl a slash of anger above the pigeons serenely scratching beneath the arch: “Down with caviar, long ...