Would there be any detrimental effects of me going back in time and reproducing with Mitochondrial Eve?
146035
As a male (I'm presuming), you wouldn't contribute any mitochondria to the offspring. You may potentially add variation into the population which, if detrimental, would be selected out of the population and thus leading to little negative long-term effects. The worst-case scenerio would be that you carry a dangerous recessive allele that gets reintroduced to the population due to consanguineous mating (mild inbreeding), but chances are such an allele would be selected out entirely over many generations.
1132150
Of course there are. All muatation actually is, is a mistake in duplicating DNA when the cell divides. Instead of the original code, you get a slightly altered one. Happens all the time in single cell organizmes, like bacteria. If the altered code provides some evolutionary advantge it is likely to be preserved or even spred through natural selection, to eventually replace the original.\nMutation happens in multicelular organizms as well, but the effect is not always so noticable. Given enough time for evolution to do it's magic, you could have whole different spicies that originated from mutated variaties of pre-existing ones, that may or may not have become exinct in the meantime. That said, the likleyhood of a mutation having a positive effect is small. It is more likely to cause harm then good and is known to the orighin of all manner of nasty diseases.\nOf course, genes can only do so much. You could say that something like telepathy may be possible, after all, we are far from utilizing our whole brain, and mutated genes could possibly do that. They can only give us such attributes as are possible according to the laws of physics, so not so much with the shooting laser bolts from your eyes and stuff like that.
239980
Best not to worry about the future.\nYou would be far better off dealing with NOW.  The past is just your memories.  The future is possible plans.  You are Here, Now.
597351
You'd probably have to go back to the 14th or 15th Century for this one; though 14th or 15th Century forensic science was crude at best, scientists at that time were were very meticulous investigators.\n\nOTBPOC
438716
I'd say no. Location has nothing to do w/ genes UNLESS you isolate the people in each city so the people inside them cannot reproduce with other people from different cities. Over time you MIGHT be able to see little distinctions because the dominant traits will have been passed around to everyone and then they will express it.
483583
hi, well if i could change one thing i would want too go back in time so that i could fix all the stupid mitakes i have made in the past. i know that might sound crazy, but theres alot of mistakes i have made. catcha ps great question!
391887
yes you can. it takes you back in time...or you get to see the future..this is how time machines work.
144265
Heck yes, do you not remember when they took the implants off of the market several years ago?  Stay as nature intended you, it's not worth the risk.  You should see some of the articles that I have seen about women who get very sick after having that done.
856325
Beause it you do not go through it, you will not be able to produce the egg and the sperm that make up the baby which in turn grows up to adulthood and produces its own sex cells and the generations continue.  Now you could reproduce with mitosis but you would be a clone of your parent and therefore you would be susceptable to anything your parent is, in other words you would die of the same causes your parents would and at the same time just like bacteria.
254218
You can't.... you use what you know about the past and change the future. Don't be wishful that something could have happened differently. If it had, you wouldn't be who you are today.
1061597
That is a scary thought, just one wrong person or even one wrong move and the world could be thrown into a parallel time or alternate universe, but would someone with a time machine be able to fix what went wrong. Then I think of what good even I could or what  I would want to go back and "fix" warn myself or loved ones of mistakes, prevent some deaths, but I know that this is not my place and I would not want to "play" God, Greed would probably play into it and I would want to play the lottery or something equally greedy. Great Question!!! Thanks for getting me to think about this.
421919
Abortion was considered to be an extrememly disgraceful thing in mid-victorian scotland and would not have been reported. ANy direct statisics would, at best be guesses, and more opnion than anything else. Your best bet would be to see if you could track down post-pregenacy treatments. Many of the older established hostpials are sometimes willing to check their records.
479777
I doubt it, I think it's just one problem that someone put forward to explain why Time Travel would be impossible, some of the first examples given were the Grandfather Paradox and the Butterfly effect but loads of Oxymoron's exist such as "American Military Intelligence!"  but what's the point of being an oxygen breather if you can't be a moron :0)
752397
I would go to the distant future and speak with people who perhaps allready have the time machine so I could understand how to use it carefully without disrupting the continuum. I would be careful on going to the future to get reports on sports games and the stock market because each future you visit is only one particular future, and with each passing second it creates a completely differrent future. I also might take christians and other religeous fanatics to the far distant past to prove to them that evolution occured once and for all and their bible thumping is basicaly meaningless. However this could also be dangerous because any foreign disease on us, or exhaled by us that was exposed to the primordial world could totaly change what we know to be current history. Every invention created by us happens very carefully, we make nothing before we are ready. If (in total speculation) a future time traveller visited the past he would have all precautions accounted for, such as disease, mistakes, and keeping a low profile. In our century we have no such precautions. So if I ever did get a hold of a time machine, I would return it to whoever it came from. Another problem with using a time machine to change the past or "the grandfather" paradox is Richard Feynmans theory of "a particle will take every possible path in space time" meaning if I went back and changed a past, I would change the past in a totaly differrent time frame then the temporal continuum I am used to, so when I returned everything would be the same. However I would be still messing with the universe. Theirfore if I ever found a empty time machine I would indeed leave it alone, or return it to the big temporal lost and found. We are not ready for such technology, and probaly wont be for a long time.
1082095
Time travel to the future is theoretically possible.  Travel in space at near-light speed for a short time and a much longer period of time will have passed on Earth.  Or you could have yourself cryogenicly frozen (though I'd wait until they perfect the revival process) and see the future that way.\n\nIt would be a good thing to see the progress of mankind, but you may have a hard time fitting in.  Since there's no way to travel backwards in time, you would be stuck there.
1006777
You'd have to build a time machine and go back a few billion years. Sadly organisms like amoeba are too small and soft to leave fossil records, the best we have to go on is evidence of the chemical reactions microbes perform.
657202
Yes and this has been backed up with the use of past life regression techniques. A girl I know was a man in a previous life and was also an animal. It all depends on the lessons you learn in each lifetime I guess.