MYTH 1: A duck's quack doesn't echo.
MYTH 2: frog can jump in space.
MYTH 3: sharks are immune to cancer.
MYTH 4: Humans have stopped evolving by natural selection.
MYTH 5: Lightning never strikes the same place twice.
MYTH 6: Whether you can roll your tongue or not depends on your genes.
MYTH 7: Bumblebee flight violates the laws of physics.
MYTH 8: We only use 10% of our brains.
MYTH 9: Earth is closer to the sun during summer.
MYTH 10: Astronauts would explode without their spacesuits.
MYTH 11: Bats are blind.
MYTH 12: Hair and fingernails grow even after death.
MYTH 13: Pure water conduct electricity well.
MYTH 14: It is impossible to stand an egg on its head.
MYTH 15: Lemmings commit mass suicide.
MYTH 16: You are born with all of the brain cells you will ever have.
MYTH 17: People can have "photographic" memory.
Disclaimer: I have collected those from net.