The horseshoe crab is a living fossil that's called Earth its home for almost half a billion years. And if you’ve ever had a vaccine, injection, or a medical implant, then you might not know that you’ve been relying on this prehistoric creature’s blood to save your life. Now, after decades of waiting, a new synthetic solution could change all of that. Do you have a solution to a big problem that will make the world a better place? Submit your idea here! https://www.youtube.com/watch?v=FImv1bJNdLI Video by Leila Hussain & Robin Fall

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