Blood vessel

Octopuses have three hearts, blue blood, and nine brains

Octopuses have three hearts, blue blood, and nine brains — one central, eight in their arms

Your body has about 37.2 trillion cells

"Your body contains approximately 37.2 trillion cells, surpassing the Milky Way's stars."

Concrete

Human bones are stronger than concrete — ounce for ounce, bone is stronger than steel

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."

Rosalind Franklin

Rosalind Franklin's X-ray diffraction image, known as Photo 51, was critical to discovering the structure of DNA