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    25 Facts You Didn't Know You Needed To Know...

    The best of BBC News Magazine Monitor's "Ten Things We Didn't Know Last Week."

    1. You can determine an elephant's age by its rumble.

    2. Men who struggle to grow facial hair can get a beard transplant.

    3. It is illegal to race rubber ducks in some US states.

    4. There were pygmy tyrannosaurs.

    5. Meryl Streep has been thanked more often than God at the past 12 Oscar ceremonies.

    6. Crocodiles can climb trees.

    7. The brain reacts to :-) in the same way as a human face but (-: does not give the same response.

    8. There is one international zipline ride in the world, between Spain and Portugal.

    9. Fish nuggets served to US troops must contain only fish caught in American waters or by an American ship but may use foreign breadcrumbs.

    10. People in Bangkok and Sao Paulo smile the most in selfies.

    11. Lone peacocks fake the noise of sexual congress to attract peahens.

    12. The "five-second rule" does work - time is a significant factor in the transfer of germs from floor to food.

    13. Hillary Clinton hasn't driven a car since 1996.

    14. Ear wax can be used to monitor pollution.

    15. One in three British households owns Queen's Greatest Hits.

    16. Blind people's dreams are richer in sounds, touches, tastes and smells.

    17. If a kitten doesn't encounter a human in a friendly context between the ages of 3-8 weeks, it's more likely to go feral.

    18. Cate Blanchett and her husband share an email account.

    19. Ukraine's navy is equipped with combat sea lions.

    20. The only McDonald's in Vietnam is run by the Harvard-educated son-in-law of the country's Communist prime minister.

    21. It took 4 hours to - clump by clump - create Christian Bale's artificial chest hair in American Hustle.

    22. You can open a can of food just by rubbing it on a concrete surface or a rock.

    23. Humans make almost identical judgments of people merely by hearing (not seeing) them say "hello".

    24. Online shoppers will only wait an average of 4 seconds for an internet page to load before giving up.

    25. When filming summer scenes in winter, actors suck on ice cubes just before the camera rolls; it cools their mouths so their breath doesn't condense in the cold air.