Entertainment Weekly
http://insidemovies.ew.com/2013/03/26/independence-day-sequel/
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“The humans knew that one day the aliens would come back, and they know that the only way you can really travel in space is through wormholes,” Emmerich tells Entertainment Weekly. “So for the aliens it could take two or three weeks, but for us that’s 20 or 25 years. It’s a changed world. It’s like parallel history. [Humans] have harnessed all this alien technology. We don’t know how to duplicate it because it’s organically grown technology, but we know how to take an anti-gravity device and put it in a human airplane. The first one ends on a little success, but only enough to give the humans hope. And then in the second one they free themselves again [from the aliens].”
Look for more on both of these films soon. And for god’s sake, please someone change the damned titles as they’re terrible.