This week we've got two amazing stories that couldn't be more different. Rachel spins a tale that spans millions of years. Could the explosion of life during the Ordovician have been the result of meteor impacts? Could those meteors have come from a time when Earth had rings like Saturn? She explores this possibility this week!

Victoria is up next and scoops Rachel with a topic off her secret list. This week she present to you the mysterious and strange Blue Sea Dragons. Earth is full of strange creatures. We're happy to bring them to you each and every week.

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