Mount Everest Grows About 4 Millimeters Every Year

The colossal height of Mount Everest is not a static feature but the result of a dynamic and ongoing geological battle. For about 50 million years, the landmass that is now the Indian subcontinent has been slowly crashing into the Eurasian continent. This immense, slow-motion collision forces the Earth's crust to buckle and fold, pushing the Himalayan mountain range, including Everest, steadily higher. In a fascinating twist, the rocks found at Everest's summit contain marine fossils, a testament to their ancient origins on the floor of the Tethys Ocean before being thrust nearly 30,000 feet into the sky.

This upward push from the tectonic plates is in a constant struggle with the forces of erosion. Wind, ice, and water relentlessly scour the mountain's surface, wearing it down over millennia. This creates a delicate balance between growth and decay. However, the tectonic uplift continues to win this battle, causing the mountain to gain roughly 4 millimeters in height each year. Recent scientific studies have even revealed a surprising ally in Everest's growth: nearby rivers. As these rivers erode and carry away billions of tons of rock, they lighten the load on the Earth's crust, allowing the entire region to rebound and rise even faster. This process ensures that the world's tallest peak is still a work in progress, actively shaped by the planet's powerful internal and external forces.