(NC & T) James Wookey is the lead author of the study The solid inner core of the Earth began to form more than a billion years ago, when the liquid iron core that surrounds it began to solidify. Since

A tsunami is basically an earthquake that occurs under the seabed. Depending on its intensity and location, it may or may not cause a tsunami. This means that not all tsunamis generate tsunamis, but all

Minerals are formed in numerous and diverse environments. Most precious stones are formed in the earth's crust, that is to say the upper layer, at a depth that varies from 4.8 km. at 40 km. Only two varieties

Although the popular belief is that gold is the most expensive metal on the planet, at present it is not, since the most expensive metal in the world is rhodium, beating platinum and gold. Over the last

As we have been warning since the beginning of 2010, by the way decreed in the Assembly of the United Nations (UN) as "International Year of Biodiversity" or Biodiversity, the loss of thousands