10 Most Ridiculously Common Science Myths
Many people think that Polaris is the brightest star in the northern hemisphere night sky, but there’s one that shines almost five times brighter. The name of that star is Sirius, but we know more about Polaris because of its position in the sky that marks North, hence the common name, “North Star”.
Five Second Rule
One of the most commonly used theories is that the food you drop on the floor is safe to eat if you pick it up within five seconds. It doesn’t take germs five seconds to stick to your food, when food falls on the floor it’s immediately filled with dirt and germs.