Ancestral home of all human beings discovered by scientists

[Blue_true]

70. That's one way of looking at it.

One of my concerns with climate change is that more and more of the earth's moisture will get swept away by solar winds if we keep sending moisture higher into the atmosphere in large quantities.

The prevailing scientific logic is that severe issues from climate change are far more likely to happen than death from another ice-age. The Sun, by the way is in a solar minima that it is going to be in for a while, so, in theory, an ice-age should be happening now.

The earth has undergone changes over it's 4+ billion years of existence. If we didn't have a certain amount of greenhouse gases in the atmosphere to deflect solar rays back to earth, the earth would have a frigid surface. It is possible that ice ages happened during periods when the earth's atmosphere was relatively depleted of greenhouse gases. There was an event on earth billions of years ago when virtually all of the oxygen on earth was released in the atmosphere as a class of prehistoric organisms died (oxygen release was part of their death cycle). So, the earth is capable itself of bringing about a very massive, life changing event on it's own. Now, the last thought get's me to Venus. Scientists now believe that Venus once had an earth-like appearance, with greenery and surface rivers, lakes and oceans, then a massive event took place to create the hellhole that Venus is now.

It won't matter in another 4 billion years anyway, the expanding Sun will destroy the earth. But my guess is that human beings would have finished their era long before that. My wonder is whether we will surpass the reign of the dinasaurs and before them, the giant lizards, those combined eras were around 400 million years, we have been here around 12-13 million years and seem to be doing our damnest to kill ourselves off.