Tag: Science Snacks
-
Your body contains a tiny amount of gold—about 0.2 milligrams! Most of it is in your blood, with smaller traces in your bones, liver, and kidneys. That’s not enough to make you rich—it’s less than a grain of sugar—but it’s a fascinating fact about human biology. Gold is a natural element, and tiny amounts get…
-
Octopuses are ocean oddities with a surprising feature—they have three hearts! Two of these hearts pump blood to the gills, where oxygen gets picked up, while the third heart pumps oxygenated blood to the rest of the body. What’s even weirder? The main heart stops beating when an octopus swims, which is one reason they…