Your body has about 37.2 trillion cells

You shed about 1.5 million skin cells per hour

You shed approximately 1.5 million skin cells per hour, equating to roughly 4 kg annually

Observable universe

There are more stars in the universe than grains of sand on all of Earth's beaches

A single teaspoon of soil contains more microorganisms than people on Earth

A teaspoon of soil harbors more microorganisms than Earth's human population

List of common misconceptions about science, technology, and mathematics

"Brain uses 20% body energy, 2% body weight."

Your DNA stretched end to end would reach the Sun and back over 600 times

Your DNA stretched end to end would reach the Sun and back over 600 times

Neutron stars are so dense that a teaspoon of their material would weigh about 6 billion tons

Neutron stars: teaspoon weighs ~6 billion tons