(Graham Thompson/CBC) A Saint John auction house has opened online bidding on a collection of megalodon shark teeth that are millions of years old. Sarah Jones, curator at Jones Auction House ...

But you may have heard that the carbonation in sparkling water can have harmful effects on your teeth by eroding your tooth enamel, even if you opt for a version that doesn't contain any sugar.

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Scientists in Japan are working on a medication to allow humans to grow a third set of teeth. This treatment focuses on a gene responsible for tooth growth and has begun clinical trials.