Crows can recognize individual human faces and hold grudges for years

The human nose can detect about 1 trillion different scents

Human nose detects ~1 trillion scents

Footprints on the Moon (1975 film)

Moon footprints endure millions of years; no wind/water erosion

List of animal names

A group of flamingos is called a 'flamboyance'

Benford's law

The leading digit '1' appears about 30% of the time in datasets following Benford's law

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

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

Octopuses have three hearts, blue blood, and nine brains

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