I doubt it. Nature doesn't work that way. Getting to 120 is going to take a LOT of engineering. You are going to have to manipulate the immune system in a fundementally more complex way than we're doing know. You will need to have better organ transplantation and you're going to have understand the brain. You're going to have to understand human biology at a much deeper level that we currently do. And you will be swamped with details.

Aging isn't just one thing. It's the pileup of a lifetime of little things going wrong until the bridge collapses.

You may be able to DELAY aging with some sort of magic bullet but that is likely to have a whole raft of unintended consequences. Not to mention, you're going have to start on it when you're about 20 years old.

A bottle of bear spray is 10 oz of 2% capsaicin. If that accidentally or purposely was released it could incapacitate an entire plane. Given that there is no reasonable use for said spray while flying, it makes abundant sense to pack it away so the chances of release are minimized. All it takes is one half crazed passenger to put a whole lot of people in serious jeopardy. And we all know that a typical flight carries more than one half crazed person.

Leaking gas for one thing. Same reason you shouldn't carry propane stoves, gas fueled lanterns or any number of potentially hazardous devices.

Well, they were often loaded. Not sure about the armed part.

For great justice.

I'd suggest getting your kids to learn:

1) Organic Chemistry (think Mad Men) - drugs will never go out of style.
2) Weed farming (ibid)
3) Mushroom cultivation (ibid)
4) Bulk chemical engineering (ibid)
5) Psychology and counseling techniques.

It's just a matter of being ahead of the curve.

Don't worry, they've thought about that. Most modern high performance weapons need maintenance and spare parts. Get on our shit list, no maintenance and no spare parts. It's either us or the Israelis (who somehow manage to manufacture high performance US weapon systems in their entirety).

Ask the Iranians. Their 'modern' Air Force has lots and lots of hanger queens. They've gone to making model RC planes since that is the best they can do on their own.

Kaboom. It's the earth shattering kaboom.

Bursting in flames is so 19th Century.

Really. This. How hard is it NOT to flame people on a COMPANY EMAIL system? Even if some hacker doesn't get to you, your boss or some HR flunky might. Leave the immature conversations to places like Slashdot. It's what we do ....

Every. Fucking. Hospital. Everywhere.

The only thing that keeps this from being a problem is that the gory details of most people's lives are really not interesting to anybody and they are hard to monetize. I would imagine that hospitals and clinics around Hollywood have been hit multiple times. If you are a 'high value target', ie, nobody here on Slashdot, I'd be worried.

Very worried.

Ah, the intuitive AC. One course in physics and he is light years beyond rabble of academic researchers who have spent their entire careers on these intellectual dead ends.

A Nobel for you, sir! A hear there is one floating around, waiting for the highest bidder.

Kinda depends on how you look at Lamarkian inheritance. While not the major driver in evolution, epigenetic changes (through, for example, DNA methylation) can do exactly what Lamark hypothesized.

True, this isn't particularly earth shattering, but you are incorrect in stating that there is no change in DNA. Methylation covalently (stably) alters DNA. So it actually does create a different nucleotide, one that is recognized by the cell as different from the original. This COULD result in germ cell (ie, heritable) changes.

There is absolutely no data to suggest that this particular set of methylation events has anything to do with reproduction or reproductive fitness, but mechanistically, it's possible. We are still pretty much working out the importance and scope of DNA methylation. In this particular instance, it is not at all clear that it does anything except alter gene expression - and we know that exercise causes gene expression changes. Those new biceps didn't just magically pop into being (unless you are photoshopped).

Not quite. Sperm (in humans) are stored in the epididymus.

This post brought to you by the National Association of Biological Pedants.

Yes. That is the interesting bit about DNA methylation. Lots of 'transient' things can change the structure of DNA. If you think about it a bit, it makes sense. The 'Central Dogma' (which for years has been barking up the wrong tree) states that DNA makes RNA which makes Protein and DNA loops back and makes itself. While certainly true, it is too coarse of an approximation to be really useful. DNA changes in response to the environment (the topic here), RNA amplifies and interferes with pretty darn near everything, the environment can directly act on germ cell lines (again, via DNA methylation).

So yes, thinking (which at the molecular level requires at the very least RNA and protein production) can, through methylation and other mechanisms, control gene expression both in the organism and in progeny.

Nature has had several billion years to mess around with this. It's fantastically complex