oceanservice.noaa.gov

OGJg7 TIL the highest point above Earth’s center is not Everest. It’s Mount Chimborazo, in Ecuador. This is because the earth is not a perfect sphere, but rather oblong shaped. The earth is fatter in the middle from centrifugal forces during its constant rotation.
LQdWd TIL the Earth’s tallest waterfall is actually underwater in the ocean
j6waM TIL that about half of Earth's oxygen comes from the ocean. It is mainly produced by marine plankton that include algae, bacteria and other organisms that can photosynthesize.