Your fingernails might seem slow to grow, but they’re keeping pace with something massive: entire continents. On average, fingernails grow about 3.5 millimeters a month—roughly 4 centimeters (1.5 inches) per year. That’s just about the same rate the continents are drifting across the Earth’s surface, driven by tectonic plate movement

In other words, while you're growing a new pinky nail, Africa might be inching closer to Europe. One tiny trim for you, one giant shift for the planet.