Giant sea scorpion discovered
Now here's a story with a sting in the tail - scientists are claiming to have found the remains of the biggest and the oldest fossilised scorpion. It was more than 1.5 metres tall, but it didn't live on land; it inhabited the deep ocean and lived 460 million years ago. It's a distant relative of the horseshoe crabs that are still around today. Joanna Kerr spoke to Yale scientist James Lamsdell. He had the painstaking task of piecing together the remains of the creature, which were found in a meteor crater that sat on the floor of an ocean in what is now the state of Iowa in the USA...
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