This is a very interesting video.
It would seem impossible for humans to survive billions of year. If we have any descendants billions of years from now, then they would be dramatically different in form and function. They would also have to survive many worldwide extinction events.
Due to plate tectonics coming to an end, the Earth is predicted to be cold, dry and dead in 500 million years. Maybe our more advanced descendants, if they are still around, will find a way to terraform the planet
I think that machine intelligence will eventually replace biological intelligence. I see this happening through our own actions as we slowly modify ourselves. I think that the beginnings of this will start in our lifetimes.
Here is another very interesting video from the same source, called "Last Words." https://www.youtube.com/watch?v=Qig68IuPrbk