How about a T.Rex in the Grand Canyon?

How would you like a herd of Wooly Mammoths roaming about in Minnesota? I figure they'd like someplace cooler than, say, here in Florida. Scientists are thinking about something called "de-extinction", even openly talking about it lately. 10 years ago, some scientists cloned an an extinct Pyrenean ibex from a frozen tissue sample that had been harvested before the goats became extinct. The clone only lasted minutes after birth. I am assuming this ibex clone was created in the same way as Dolly was.

This, of course, got the budding Frankensteins all atwitter and thinking about making Jurassic Park a reality and not just a series of movies.

Of course, once you bring back mammoths, you have to bring back their predators... the sabre-toothed tigers.  And Los Angeles thinks it has troubles with coyotes...