The coriolis effect affects the motion of water as it goes down a drain.
The human circadian rhythm is 25 hours.
If a shark stops swimming and are no longer in motion, they drown.
Women's periods synchronize.
Vegetarians must eat complementary amino acids within a single meal to get good protein.
The increased pressure below an ice skating blade causes the ice to convert to water, allowing the skater to slide.
Dogs are colorblind.
Vitamin C protects/cures the common cold.
People can accidentally die by running an electric fan in a closed room.
Injecting an air bubble into a syringe will kill someone.
Microwaves heat the inside of a dish first.
The weather is warmer in the summer because the Earth is closer to the Sun.
Hair and fingernails continue growing after death.
Astronauts need special pens in space because normal ballpoint pens do not work. http://www.esa.int/esaCP/SEM9YN7O0MD_index_0.html
Drinking milk causes increased mucus production.
Human embryos go through a stage with rudimentary gills, reflecting their evolutionary past.