Well, that was a missed opportunity to do good by wiping out the human race.
Science nerdery: compared to the diameter of the Earth (12800 km) even the highest mountains like Everest (9 km) or deepest depths of the oceans (11 km) are nothing. Flatter than a billiard ball, except... due to spin Earth does have a noticeable bulge at the equator. So not a perfect sphere, a slightly squashed one.