Here's a shocker of a headline:

You Can't Travel Back in Time, Scientists Say

That has a bit if dog-bites-man quality, doesn't it? However, the same article links to a neat video that allows that time travel might be possible after all.

Traveling to the past sounds like it's more trouble than it's worth. I mean, don't get me wrong -- it would be great to go back and see how things were. And if you're a little on the nutso side, maybe to go back and change things and then rush back ahead to see how things come out differently.

In any case, I doubt that there is really such a thing as traveling back to THE past. If you go back to the past (and your'e from a timeline where you didn't) then it seems all you have really done is travel between parallel universes. You would be able to change "the present," but not the one you came from.

On Sunday's podcast, we talked a little about immersive virtual reality technology. I think that will eventually be a pretty good substitute for time travel. It will certainly be easier to achieve.

Congratulations on your recent purchase of a time machine.
Safety Tip #1 -- choose your landing place carefully.