The U.S. Geological Survey and Esri have created a zoomable map that lets you explore all of the world's ecological land units down to an astounding 820 foot (250 meter) resolution. Check it out and tell us about your "ecological land unit."
Many factors contribute to the global distribution of Earth's oceans, but the strongest by far is the centrifugal force that results from our world spinning about its axis. This raises an interesting question: how might our planet's water be apportioned if the world gradually stopped spinning altogether, thereby…
If the Earth stopped spinning, the oceans would divide, a megacontinent would emerge at the equator, one day would last one year, and our now-ellipsoid planet would become spherical. But we can finally build that freeway from Jakarta to Houston!