As far as I know the only way to go back in time involves the use of wormholes. Where you arrive in the past depends on the position of the other end of the wormhole. If you want to go to a specific time and place you have to hope someone created a wormhole then and there, and then brought one of the ends into the future using time dilation.

Eventually the pile of corpses will provide sufficient material to create a viable biosphere.

A thousand quatloos on the newcomer!

Correction, I meant 'ADD', not 'PLUS'. It's been over 20 years since I've programmed in COBOL and I've done my best to block it out of my mind.

Here I am pointing out that what many people consider to be a problem with COBOL, that it is too wordy, has in fact a functional purpose. Although, using the word PLUS for '+' did go a bit too far. I have to assume most business managers know what '+' means.

I think we can blame all the faults of COBOL on the fact that she wanted it to be human readable by business managers. What would your programming language look like if the Pointy-Haired Boss had to be able to understand it?

Give everyone a robot. That robot can go earn a living for them.

Disclaimer: this is a joke. Please don't tell me how this is not practical.

Does this mean they will be able to vote?

It still won't work for giraffes stretching their necks.

I blame Game of Thrones. Although you'd think Joffrey would be example enough to discourage monarchy.

When they say the fuel is "exhausted", what they really mean is that there is no longer enough to maintain an equilibrium with gravity. There is still a lot left. As gravity sucks down the remaining fuel it increases the pressure, heating it up enough for a big fusion reaction.

All the more reason why we need to get autonomous cars on the road.

Ender's Game is a fanciful allegory, a forced, fictional situation someone would come up with in a classroom in order to made some sort of philosophical point about ethics. I personally wasn't in the military, but a good friend of mine was in Special Forces, and everyone in his unit read Starship Troopers and would quote from it and even use its terminology in the performance of their profession. Ender's Game is as much about war as Swordfish is about hacking.

Ender's Game is the quintessential classic military sci-fi book.

I have to disagree with that quote. Ender's Game is an anti-war book. If you want the quintessential classic military sci-fi book, read Starship Troopers.

You're technically correct. We've detected something or some phenomenon, and there are theories that can explain that something without dark matter, but like you said, they're not likely. Perhaps I was a little too dismissive of the fringe theories. Without direct evidence of what it is, all we really have is Occam's razor.