Did you know that sharks shed their teeth and grow new ones? I hope someone is researching the genes that cause this with a view to sharing them with us! Shedding our baby teeth and having to make the rest last a lifetime is just ridiculous and bad design.
Gransnet forums
Chat
Join the conversation
Registering is free, easy, and means you can join the discussion, watch threads and lots more.
Register now »Already registered? Log in with:
Gransnet »