Scientists have confirmed the world's largest scorpion ever discovered. The giant predator, Praearcturus gigas, lived 415 million years ago in Britain and it would grow over 1-metre long. Imagine a scorpion longer than a cricket bat crawling across ancient Britain. A new study confirms that the largest scorpion ever discovered lived around 415 million years ago, long before forests or large animals existed. The species, Praearcturus g... [2106 chars]