A little later...

"Looks like it's up to you and me. Two of you and me," said Malcolm Tunney.

"Yeah, we better get back to the control room." "Figure this out ourselves," Rod and Rodney agreed.

"Wait! W-w-wait, wait. Isn't there like a room full of geniuses out there?" Jennifer reminded.

Malcolm and Rodney both snickered. "That's debatable."

"That's correct!" said Rod at the same moment. The three eyed one another uncomfortably. "What? We need all the help we can get!"

"If that freeze lightning thing happens again, people could die," added Jennifer.

"She's right, it would be stupid to ignore the available brainpower."

"They'll slow me down!"

"What, you can't work with others? Just my luck," Rod complained.

"Yes, what happened to that humble thing we were going to try today?" Jennifer questioned.

"How come you're taking his side? He's me! Almost, sort of."

"Perhaps you could learn a thing or two from him," Jennifer chided.

Malcolm looked amused. "Whoever said that two heads are better than one forgot to mention that the heads need to belong to different people."

The McKays blinked. "What's that supposed to mean?"

-

A little later, in the reception area...

"Attention guests. I'm sure you have noticed that it has become rather... chilly. Due to an unforeseen instability in the matter bridge..."

Rodney coughed loudly.

"Due to an instability I did not anticipate, we are as of yet unable to stop the heat transfer. Also, because of the irregular power pull from the bridge, the demand on the heat sink is fluctuating. The result is what I am calling 'freeze lightning'."

Rodney muttered under his breath, and Rod shushed him.

"It is the sudden and immediate transfer of heat from a localized area, and it is potentially very lethal," Malcolm continued.

"Look, we need to figure out how to collapse the matter bridge, stop it from drawing energy from the heat-sink, otherwise it's going to get unlivably cold in here," Rodney explained.

"And, all the heat is being shunted from this reality to an alternate reality, which is populated by people just like yourselves who really don't want the excess heat," Rod added.

The audience murmured. "There's two of them?" questioned the deep voice of Neil DeGrasse Tyson.

"Double the trouble," Bill Nye appended.

"Yes, yes there is. I have travelled through the matter bridge to this reality in order to ask you to stop. And, it seems, to assist you in achieving that."

"And we need all of you to help as much as possible," Malcolm added, trying to settle the restless audience whose attention was diverted to the alternate reality issue.

Tyson still had questions on the alternate issue. "You're Rodney McKay from another reality? I find that hard to believe."

"Hello, he looks exactly like me - apart from the jacket - and how do you expect he got in here?"

"Go easy on the belligerence, Rodney," said Rod. "But yes, I'm Doctor Rod McKay, and I came from another reality. By the way, it's great to see you, Ty. Great work keeping Pluto's status as a planet."

"What did you just..."

"Ahem," Rodney interrupted. "There are obviously several differences between realities. That's why they're called alternate. But that's not the main issue here. We need to shut down the bridge. Preferably after he leaves, that is."

"Would smashing it into pieces work?" suggested Bill Nye.

"No, it wouldn't. Nice try though," Rod replied.

"Why not?" Nye wondered.

"Because that could create a tear in our space-time?" Rodney slowly enunciated.

"Would shutting down the containment field help? At least we would stop freezing so quickly," a female scientist suggested.

Malcolm shook his head. "Well, for one thing, it's tied into the basic function of the matter bridge, so we can't just shut it off."

"And even if we could, it houses so much cool air now that it would create a…sudden massive cold front as soon as it drops. I mean, we're talking high-speed winds, tornados, an instant mega-storm," Rodney added.

Malcolm added even more bad news. "Not to mention the fact that the heat-sink draw heat not just from this facility, but from the entire planet. We cannot allow that to happen."

"And, all that heat would cook my Earth," Rod finished. He shook his head and complained, "This is so typical. Couldn't you people have waited another week before activating this? It's not that I particularly mind helping but you have the worst timing."

"Timing? What do you mean?" Rodney questioned.

"I'm supposed to be in the middle of my honeymoon."

-

Edit: somehow some spelling mistakes snuck through. Plus I fixed up an out-of-place question by adding a couple of extra lines of dialog about smashing up the bridge-generating-thing.