Carl Sagan: How we know the Earth is round :)
Carl Sagan shares his beautiful perspective for why we know the Earth is Round... :) This man is so wonderful!! <3
Read more…
Carl Sagan shares his beautiful perspective for why we know the Earth is Round... :) This man is so wonderful!! <3
Read more…
Welcome to true people of facts and positive actions to take for the benefit of the human kind.
This is an action I want to take. All the discussions must be done about actions to take to achieve a change, to substitute the evil systems, to protect th
CHAPTER XX
THE TWO WORLDS
Observing and self-observing are two completely…
Little talked about energy source;
Earth’s core is around 5,700°C, but we can’t reach it.
What we can reach is the geothermal gradient — the natural increase in temperature as you go deeper underground.
• Near the surface:…