1) There are three primary sources of heat in the deep earth: (1) heat that has not yet been lost from when the planet formed and accreted; (2) frictional heating generated by denser core material sinking to the planet's centre; and (3) heat from radioactive element decay.
2) Except for Earth, all of the planets were named after Greek and Roman gods and goddesses. The term Earth is a combination of English and German words that simply means "ground." The words 'eor(th)e' and 'ertha' are derived from Old English.
3) Earth is our solar system's fifth largest planet, and the only one known to have liquid water on its surface.
4) Asteroid debris, comet tails, and ionised particles pouring out from the sun litter the space around Earth. Every day, Earth loses several hundred tonnes of mass to space as a result of its leaky atmosphere, far more than we get from dust. As a result, the Earth is shrinking.
5) Clouds influence both the warming and cooling of our planet. Clouds keep the Earth's climate colder than it would be without them. However, it's a little more complicated: clouds may both cool and warm the Earth's temperature. Clouds can obstruct the Sun's light and heat, lowering the Earth's temperature.
6) Beach sand contains a huge amount of microorganisms. Beach sand has been used to identify bacteria, fungi, par- asites, and viruses. A number of taxa and species that come into contact with sand are potentially pathogenic.
7) Three scientists from the British Antarctic Survey report exceptionally low levels of ozone over the South Pole in the scientific journal Nature on May 16, 1985.
8) The average temperature on the planet is about 60 degrees Fahrenheit. It was closer to 70 degrees during the early Eocene, and the globe was a different place. The poles were devoid of ice, while the tropical oceans sweltered at 95 degrees Fahrenheit. In the Arctic, palm trees and crocodiles hung around.
9) The age of the Earth is calculated to be 4.54 billion years, plus or minus 50 million years. Scientists have combed the globe in quest of the oldest rocks to date using radiometric dating. They uncovered 4.03 billion-year-old rocks in northwest Canada.
10) Even on a low-emissions route, global sea level is very likely to rise at least 12 inches (0.3 metres) over 2000 levels by 2100, according to their new models. By 2100, sea level rise on future routes with the highest greenhouse gas emissions might be as high as 8.2 feet (2.5 metres) over 2000 levels.
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