The Wandering Earth: mantle in motion

It is nice to live on the crust. It gives a degree of stability which the rest of the Earth lacks. It is not perfect: the quiet can be punctuated by earthquakes or volcanoes, and lacking those there is still the off-chance of a landslip or flood. The atmosphere may also interfere with our lives.…

Hawaii and the story of the Pacific Ocean

The expanse of water seems to go on forever. The Pacific ocean covers a third of the Earth surface, more than all the continents combined. The east-west width between Indonesia and Colombia is almost 20,000 km. There is 700 million cubic kilometer of water down there! 45 different countries own part of it. The averaged…