Why is Earth mostly crater-free compared to the pockmarked Moon?
Earth is more active, in terms of both geology and weather. Much of our planet’s geologic history was long ago folded back inside. Some of that is regurgitated by volcanoes, but the results are pretty hard to study. Even more recent events evident on the surface — craters that can by millions of years old — get overgrown by vegetation, weathered by wind and rain, and modified by earthquakes and landslides. The Moon, meanwhile, is geologically quiet and has almost no weather; its craters tell a billions-year-long tale of catastrophic collisions. Interestingly, some of the oldest Earth rocks might be awaiting discovery on the Moon, having been blasted there billions of years ago by the very asteroid impacts that rattle both worlds. Next Page: Lowest and driest places 41. Where is the lowest dry-land place on Earth? The shore of the Dead Sea, located between Israel and Jordan, is 1,292 feet (394 meters) below sea level. 42. What is the largest lake in the world? By size and volume it is
