Here's a useful question for everyone on earth who wishes to have a long life here on earth or on other planets

"How does the human race survive here on earth and on other planets during the next 1 million years?"

Of Course this leads to many questions that will come up one by one for all mankind regarding all this.

But, this question likely more than any other will lead to the ACTUAL survival of the human race during the next 1 million years or more on this and other planets throughout the solar system and in our galaxy and possibly even in other galaxies too.