Moontanman

I doubt very seriously we can discuss this since i totally disagree, humans have been dragging exotic species around with us for many thousands of years, domestic animals is part of how we conquered the world. I take good care of my animals, I do not allow them to run free, squirrels are a nuisance, they have no real predators and are every bit as destructive as rats which we spread around the world. I am a responsible pet owner, I do my best to promote responsible pet owner ship in every way i can. No many people are not responsible at all only changing laws and attitudes can do anything about that. I suggest you do a bit of research about the collecting of wild fishes as pets, in many areas it is a sustainable way the people there make a living. The vast majority of freshwater fish are captive bred and marine fish are becoming that way. Pollution and habitat destruction are many orders of magnitude more destructive than the pet trade. I happen to agree with much of the take on things like big cats, monkeys, and other wild creatures.

How is walking your dog, around here they have to be on a leash, hurting the environment, I walk my dogs, pick up after them, and do not allow them to hunt any wild animals although they do occasionally get hold of a opossum which is hilarious, when they fall over and play dead the dogs don't know what to do with it, they poke it with their noses and run in circles howling... if it won't run they have no interest in it except to bark at it... Cat's are indeed a different story, many if not most run wild and kill for no reason since they are being fed my their owners... When I move in with my dogs (fenced back yards) the small animal population begins to go up immediately, lizards, toads, snakes do much better when not being consistently hunted by cats... I have a dog or two that liked to kill and eat rats and squirrels which are just rats with fuzzy tails but their success rate was quite small except for one who would use a "baited field" to catch squirrels..

Mammoths survived into historical times 4,200 years ago, a bit of a stretch i know. http://en.wikipedia.org/wiki/Mammoth

so screw the penguins? I don't think mammoths required quite that cold of a climate, they did live in areas free of ice and even down into warm areas of NA. I think they probably migrated much like caribou and musk oxen or moose. all of them have been pushed to the limits of their range and used to be more widespread. woolly mammoths could integrate into that ecosystem and probably wouldn't be much more dangerous than moose or Kodiak beers...

In fiction the only limitation should be to keep it internally consistent, after that have at it hoss! Check out "complete book of swords" by Saberhagin for an example of this principle, he makes it easy to believe in some wild things...

Wooly mammoths are by definition big furry elephants, no reason to expect them to have significant behavior differences. Fossils indicate they had most of the identifiable behaviors of elephants. turning them loose would be problematic I agree... As for other paleofauna I am not sure but I thin the mammoth is the only one we have a snow balls chance of resurrecting... a few small herds in out of the way places could be managed I am sure...

As long as the first four are true call em what ever they want... I'm not sure we under stand GMO well enough to manipulate life forms quite that much but bringing extinct animals could give us this technology eventually...

Wel if coyotes jump my fence and eat my dogs they better eat fast, a 12 gauge is hard to outrun...

If a group of dogs can kill a human you would have to assume a group of coyote's might do it but the main effect has been killing and eating pets, dogs and cats. They rarely bother deer but a lone dog or cat is toast. Evidently you are correct in that the expansion is natural although people are suddenly seeing their dogs and cats eaten by coyotes are difficult to convince. In my old home town they have become a big problem preying on domestic dogs and cats, I lived there 40 years ago and no coyotes were known. I was an avid hunter and trapper and i would have seen them at least when i was trapping foxes. The rumors of intentional release I cannot confirm and retract. http://www.wvdnr.gov/hunting/coyoteresearch.shtm http://www.newsobserver.com/2014/02/15/3624739/dogs-life-among-red-wolves.html

I live in NC, in WV where i am from they were indeed released to help control deer which they did not. Coyotes kill and eat pets regularly, I never suggested they kill and eat people but i would have to assume it's possible.. Goat are too common...lol

If they make mammoths i want one about the size of a small pony, GMO mammoths! Let it run loose in the back yard... eat the grass so i don't have to mow it...

I would be willing to bet the extinction of the dinosaurs was quick in geologic terms but lasted a few hundred thousand years at least. http://www.sciencedaily.com/releases/2011/01/110127141707.htm But other schools of thought have lend more credence to the sudden event... http://en.wikipedia.org/wiki/Cretaceous%E2%80%93Paleogene_extinction_event

Volcanoes often explode, thereby distributing the iridium but the impact almost certainly happened as well, quite possibly more than one, it was bad million years or so to be on the earth... I've read the possibility the impacts triggered flood basalts as well but i am not sure how much evidence there is to support that, something about the opposite side of the world from an impact being messed up as well...

yes, but iridium come from mantle lava floods as well...

The iridium could have been volcanic as well, personally i think it was a synergy of both, a triple whammy of multiple impacts and flood lava... http://www.ucmp.berkeley.edu/diapsids/extinctheory.html

Can you support the assertion of space iridium being a different isotope than earth bound iridium?

I know a couple of pansexual women, they can wear any look anything they like, the green nail polish is to be expected, licking a pan is bit over the top Both of them are practicing witches as well... Adriana I love you I love Laci BTW...

Previous World Wars might have economic roots but if anyone thinks a real World War wouldn't escalate into A nuclear nightmare when one side saw it's self on the losing end doesn't have any oars in the water. Large scale war is not the economic game it once was and i think everyone who could be involved knows that. It's worry some it might get out of hand by accident but by design is insane...

Locally and all up and down the east coast there is an influx of coyotes, they are killing pets and domestic animals, they were reintroduced to help keep down the deer population but pets are easier to catch... in a few places cougars are causing problems, out west they have killed several people in recent years, and bears are at an all time high and black bears are more likely to kill you than grizzlies... Their have been some interesting consequences of the genetic bottle neck deer went through about 50 years ago in my old tromping ground, resulting in lots of albino, lecucistic, other weird colored deer.

http://en.wikipedia.org/wiki/Iridium

Radioactive?

Didn't both world wars start under similar conditions? It scares me, the US has a serious need to poke it's nose into every conflict in the world, pulling back a bloody stub is inevitable... The Russians have a serious need to prove their power and the US POTUS and his weak party want to show some sign of strength, sounds like a powder keg to me, with NK saber rattling and china flexing it's muscles, I grew up in the cold war, I get nervous every time this stuff starts...

I think there is considerable proof we killed them all or at least destabilized the population at a time of environmental change that pushed them over the edge, mammoths and mastodons anyway not sure about the others...

If aliens had the technology to travel between stars bent on domination it would be muck like our modern military fighting stone age people with stick and spears. They could just sit back and pellet us with rocks and get the job done. There is an interesting series of science fiction books with just this theme, an alternate history where aliens attack the earth during the middle of WW2. http://en.wikipedia.org/wiki/Worldwar_series Then there is always this master piece of horror... http://en.wikipedia.org/wiki/Spaced_Invaders