• My, what a beautiful umbilicus you have! Survey says innies are hot, outies are not.

• Another week, another plan to exhume a dead astronomer. This time it’s Danish astronomer Tycho Brahe so historians can find out whether he was poisoned by a hired assassin.

 • All in the family: Three completely different looking fish—known as tapetails, whalefish, and bignoses—turn out to be the young, female, and male of the same species.

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